//  [typescript]
'use strict';
Object.defineProperty(exports, '__esModule', { value: true });
exports.default = solve;
// =================================================
// ABC114B
// =================================================

// solver
function solve(lines) {
  const { s } = parseLines(lines);

  const { toString } = loadLodash();
  const {
    Subject,
    from,
    operators: { min, bufferCount }
  } = loadRxjs();

  const subject$ = new Subject();
  const promise = subject$.pipe(min()).toPromise();

  from(s)
    .pipe(bufferCount(3, 1))
    .subscribe({
      next: nums => {
        const absValue = Math.abs(753 - +nums.join(''));
        subject$.next(absValue);
      },
      complete: () => subject$.complete()
    });

  return promise.then(toString);
}

// helpers
function parseLines(lines) {
  const s = lines[0].split('').map(s => +s);
  const params = { s };
  debug(params);
  return params;
}

// general helpers
function debug(message, ...optionalParams) {
  if (!!process.env.LOCAL_DEBUG) console.log(message, ...optionalParams);
}

// main
function main(lines) {
  const ans = solve(lines);
  if (ans instanceof Promise) {
    ans.then(console.log).catch(console.error);
  } else {
    console.log(ans);
  }
}

// reader
if (!process.env.LOCAL_DEBUG) {
  const { stdin: input, stdout: output } = process;
  input.resume().setEncoding('utf8');
  const lines = [];
  require('readline')
    .createInterface({ input, output })
    .on('line', line => lines.push(line))
    .on('close', () => main(lines));
}

// external modules
const getExternalModuleSafe = externalModule => {
  for (let k in this) {
    delete this[k];
  }
  return externalModule;
};
const _modules = {};
const loadLodash = () => {
  if (!_modules.lodash) {
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function(a){this.window.next(a)};a.prototype._error=function(a){this.window.error(a);this.destination.error(a);this.unsubscribeClosingNotification()};a.prototype._complete=function(){this.window.complete();this.destination.complete();this.unsubscribeClosingNotification()};a.prototype.unsubscribeClosingNotification=function(){this.closingNotification&&this.closingNotification.unsubscribe()};a.prototype.openWindow=function(a){void 0===a&&(a=null);a&&(this.remove(a),a.unsubscribe());(a=this.window)&& a.complete();a=this.window=new v;this.destination.next(a);var b;try{var c=this.closingSelector;b=c()}catch(f){this.destination.error(f);this.window.error(f);return}this.add(this.closingNotification=p(this,b))};return a}(q),uf=function(){function c(a,b){this.observables=a;this.project=b}c.prototype.call=function(a,b){return b.subscribe(new tf(a,this.observables,this.project))};return c}(),tf=function(c){function a(a,d,e){a=c.call(this,a)||this;a.observables=d;a.project=e;a.toRespond=[];e=d.length; a.values=Array(e);for(var b=0;b<e;b++)a.toRespond.push(b);for(b=0;b<e;b++){var g=d[b];a.add(p(a,g,g,b))}return a}h(a,c);a.prototype.notifyNext=function(a,c,e,f,g){this.values[e]=c;a=this.toRespond;0<a.length&&(e=a.indexOf(e),-1!==e&&a.splice(e,1))};a.prototype.notifyComplete=function(){};a.prototype._next=function(a){0===this.toRespond.length&&(a=[a].concat(this.values),this.project?this._tryProject(a):this.destination.next(a))};a.prototype._tryProject=function(a){var b;try{b=this.project.apply(this, a)}catch(e){this.destination.error(e);return}this.destination.next(b)};return a}(q),vf=Object.freeze({audit:hb,auditTime:function(c,a){void 0===a&&(a=y);return hb(function(){return eb(c,a)})},buffer:function(c){return function(a){return a.lift(new od(c))}},bufferCount:function(c,a){void 0===a&&(a=null);return function(b){return b.lift(new rd(c,a))}},bufferTime:function(c){var a=arguments.length,b=y;A(arguments[arguments.length-1])&&(b=arguments[arguments.length-1],a--);var d=null;2<=a&&(d=arguments[1]); var e=Number.POSITIVE_INFINITY;3<=a&&(e=arguments[2]);return function(a){return a.lift(new td(c,d,e,b))}},bufferToggle:function(c,a){return function(b){return b.lift(new wd(c,a))}},bufferWhen:function(c){return function(a){return a.lift(new yd(c))}},catchError:function(c){return function(a){var b=new Ad(c);a=a.lift(b);return b.caught=a}},combineAll:function(c){return function(a){return a.lift(new Ja(c))}},combineLatest:function(){for(var c=[],a=0;a<arguments.length;a++)c[a]=arguments[a];var b=null; "function"===typeof c[c.length-1]&&(b=c.pop());1===c.length&&x(c[0])&&(c=c[0].slice());return function(a){return a.lift.call(G([a].concat(c)),new Ja(b))}},concat:function(){for(var c=[],a=0;a<arguments.length;a++)c[a]=arguments[a];return function(a){return a.lift.call(aa.apply(void 0,[a].concat(c)))}},concatAll:Ya,concatMap:kb,concatMapTo:function(c,a){return 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b.scheduler=d;return b}h(a,c);a.prototype.scheduleMessages=function(a){for(var b=this.messages.length,c=0;c<b;c++){var f=this.messages[c];a.add(this.scheduler.schedule(function(a){a.message.notification.observe(a.subscriber)},f.frame,{message:f,subscriber:a}))}};return a}(n);pb(Ka,[Hb]);var Ib=function(c){function a(a,d){var b=c.call(this)||this;b.messages=a;b.subscriptions=[];b.scheduler=d;return b}h(a,c);a.prototype._subscribe=function(a){var b=this,e=b.logSubscribedFrame(),f=new t;f.add(new t(function(){b.logUnsubscribedFrame(e)})); f.add(c.prototype._subscribe.call(this,a));return f};a.prototype.setup=function(){for(var a=this,c=a.messages.length,e=0;e<c;e++)(function(){var b=a.messages[e];a.scheduler.schedule(function(){b.notification.observe(a)},b.frame)})()};return a}(v);pb(Ib,[Hb]);var xf=function(c){function a(a){var b=c.call(this,Ia,750)||this;b.assertDeepEqual=a;b.hotObservables=[];b.coldObservables=[];b.flushTests=[];b.runMode=!1;return b}h(a,c);a.prototype.createTime=function(b){b=b.indexOf("|");if(-1===b)throw Error('marble diagram for time should have a completion marker "|"'); return b*a.frameTimeFactor};a.prototype.createColdObservable=function(b,c,e){if(-1!==b.indexOf("^"))throw Error('cold observable cannot have subscription offset "^"');if(-1!==b.indexOf("!"))throw Error('cold observable cannot have unsubscription marker "!"');b=a.parseMarbles(b,c,e,void 0,this.runMode);b=new Ka(b,this);this.coldObservables.push(b);return b};a.prototype.createHotObservable=function(b,c,e){if(-1!==b.indexOf("!"))throw Error('hot observable cannot have unsubscription marker "!"');b=a.parseMarbles(b, c,e,void 0,this.runMode);b=new Ib(b,this);this.hotObservables.push(b);return b};a.prototype.materializeInnerObservable=function(a,c){var b=this,d=[];a.subscribe(function(a){d.push({frame:b.frame-c,notification:w.createNext(a)})},function(a){d.push({frame:b.frame-c,notification:w.createError(a)})},function(){d.push({frame:b.frame-c,notification:w.createComplete()})});return d};a.prototype.expectObservable=function(b,c){var d=this;void 0===c&&(c=null);var f=[],g={actual:f,ready:!1};c=a.parseMarblesAsSubscriptions(c, this.runMode);var h=c.unsubscribedFrame,k;this.schedule(function(){k=b.subscribe(function(a){var b=a;a instanceof n&&(b=d.materializeInnerObservable(b,d.frame));f.push({frame:d.frame,notification:w.createNext(b)})},function(a){f.push({frame:d.frame,notification:w.createError(a)})},function(){f.push({frame:d.frame,notification:w.createComplete()})})},c.subscribedFrame===Number.POSITIVE_INFINITY?0:c.subscribedFrame);h!==Number.POSITIVE_INFINITY&&this.schedule(function(){return k.unsubscribe()},h);this.flushTests.push(g); var m=this.runMode;return{toBe:function(b,c,d){g.ready=!0;g.expected=a.parseMarbles(b,c,d,!0,m)}}};a.prototype.expectSubscriptions=function(b){var c={actual:b,ready:!1};this.flushTests.push(c);var e=this.runMode;return{toBe:function(b){b="string"===typeof b?[b]:b;c.ready=!0;c.expected=b.map(function(b){return a.parseMarblesAsSubscriptions(b,e)})}}};a.prototype.flush=function(){for(var a=this,d=this.hotObservables;0<d.length;)d.shift().setup();c.prototype.flush.call(this);this.flushTests=this.flushTests.filter(function(b){return b.ready? (a.assertDeepEqual(b.actual,b.expected),!1):!0})};a.parseMarblesAsSubscriptions=function(a,c){var b=this;void 0===c&&(c=!1);if("string"!==typeof a)return new ga(Number.POSITIVE_INFINITY);for(var d=a.length,g=-1,h=Number.POSITIVE_INFINITY,k=Number.POSITIVE_INFINITY,m=0,r=function(d){var e=m,f=function(a){e+=a*b.frameTimeFactor},l=a[d];switch(l){case " ":c||f(1);break;case "-":f(1);break;case "(":g=m;f(1);break;case ")":g=-1;f(1);break;case "^":if(h!==Number.POSITIVE_INFINITY)throw Error("found a second subscription point '^' in a subscription marble diagram. There can only be one."); h=-1<g?g:m;f(1);break;case "!":if(k!==Number.POSITIVE_INFINITY)throw Error("found a second subscription point '^' in a subscription marble diagram. There can only be one.");k=-1<g?g:m;break;default:if(c&&l.match(/^[0-9]$/)&&(0===d||" "===a[d-1])){var r=a.slice(d).match(/^([0-9]+(?:\.[0-9]+)?)(ms|s|m) /);if(r){d+=r[0].length-1;var l=parseFloat(r[1]),u=void 0;switch(r[2]){case "ms":u=l;break;case "s":u=1E3*l;break;case "m":u=6E4*l}f(u/n.frameTimeFactor);break}}throw Error("there can only be '^' and '!' markers in a subscription marble diagram. Found instead '"+ l+"'.");}m=e;p=d},n=this,p,q=0;q<d;q++)r(q),q=p;return 0>k?new ga(h):new ga(h,k)};a.parseMarbles=function(a,c,e,f,g){var b=this;void 0===f&&(f=!1);void 0===g&&(g=!1);if(-1!==a.indexOf("!"))throw Error('conventional marble diagrams cannot have the unsubscription marker "!"');for(var d=a.length,h=[],k=g?a.replace(/^[ ]+/,"").indexOf("^"):a.indexOf("^"),m=-1===k?0:k*-this.frameTimeFactor,n="object"!==typeof c?function(a){return a}:function(a){return f&&c[a]instanceof Ka?c[a].messages:c[a]},p=-1,k=function(c){var d= m,f=function(a){d+=a*b.frameTimeFactor},l=void 0,k=a[c];switch(k){case " ":g||f(1);break;case "-":f(1);break;case "(":p=m;f(1);break;case ")":p=-1;f(1);break;case "|":l=w.createComplete();f(1);break;case "^":f(1);break;case "#":l=w.createError(e||"error");f(1);break;default:if(g&&k.match(/^[0-9]$/)&&(0===c||" "===a[c-1])){var u=a.slice(c).match(/^([0-9]+(?:\.[0-9]+)?)(ms|s|m) /);if(u){c+=u[0].length-1;var k=parseFloat(u[1]),r=void 0;switch(u[2]){case "ms":r=k;break;case "s":r=1E3*k;break;case "m":r= 6E4*k}f(r/q.frameTimeFactor);break}}l=w.createNext(n(k));f(1)}l&&h.push({frame:-1<p?p:m,notification:l});m=d;t=c},q=this,t,v=0;v<d;v++)k(v),v=t;return h};a.prototype.run=function(b){var c=a.frameTimeFactor,e=this.maxFrames;a.frameTimeFactor=1;this.maxFrames=Number.POSITIVE_INFINITY;this.runMode=!0;P.delegate=this;var f={cold:this.createColdObservable.bind(this),hot:this.createHotObservable.bind(this),flush:this.flush.bind(this),expectObservable:this.expectObservable.bind(this),expectSubscriptions:this.expectSubscriptions.bind(this)}; try{var g=b(f);this.flush();return g}finally{a.frameTimeFactor=c,this.maxFrames=e,this.runMode=!1,P.delegate=void 0}};return a}(Ab),yf=Object.freeze({TestScheduler:xf}),zf="undefined"!==typeof self&&"undefined"!==typeof WorkerGlobalScope&&self instanceof WorkerGlobalScope&&self,Af="undefined"!==typeof global&&global,z="undefined"!==typeof window&&window||Af||zf;if(!z)throw Error("RxJS could not find any global context (window, self, global)");var Lc=B(function(c,a){return c.response}),O=function(c){function a(a){var b= c.call(this)||this,e={async:!0,createXHR:function(){var a;if(this.crossDomain)if(z.XMLHttpRequest)a=new z.XMLHttpRequest;else if(z.XDomainRequest)a=new z.XDomainRequest;else throw Error("CORS is not supported by your browser");else if(z.XMLHttpRequest)a=new z.XMLHttpRequest;else{var b=void 0;try{for(var c=["Msxml2.XMLHTTP","Microsoft.XMLHTTP","Msxml2.XMLHTTP.4.0"],d=0;3>d;d++)try{b=c[d];new z.ActiveXObject(b);break}catch(r){}a=new z.ActiveXObject(b)}catch(r){throw Error("XMLHttpRequest is not supported by your browser"); }}return a},crossDomain:!0,withCredentials:!1,headers:{},method:"GET",responseType:"json",timeout:0};if("string"===typeof a)e.url=a;else for(var f in a)a.hasOwnProperty(f)&&(e[f]=a[f]);b.request=e;return b}h(a,c);a.prototype._subscribe=function(a){return new Bf(a,this.request)};a.create=function(){var b=function(b){return new a(b)};b.get=Fc;b.post=Gc;b.delete=Hc;b.put=Ic;b.patch=Jc;b.getJSON=Kc;return b}();return a}(n),Bf=function(c){function a(a,d){a=c.call(this,a)||this;a.request=d;a.done=!1;var b= d.headers=d.headers||{};d.crossDomain||a.getHeader(b,"X-Requested-With")||(b["X-Requested-With"]="XMLHttpRequest");a.getHeader(b,"Content-Type")||z.FormData&&d.body instanceof z.FormData||"undefined"===typeof d.body||(b["Content-Type"]="application/x-www-form-urlencoded; charset\x3dUTF-8");d.body=a.serializeBody(d.body,a.getHeader(d.headers,"Content-Type"));a.send();return a}h(a,c);a.prototype.next=function(a){this.done=!0;var b=this.xhr,c=this.request,f=this.destination,g;try{g=new Jb(a,b,c)}catch(l){return f.error(l)}f.next(g)}; a.prototype.send=function(){var a=this.request,c=this.request,e=c.user,f=c.method,g=c.url,h=c.async,k=c.password,m=c.headers,c=c.body;try{var r=this.xhr=a.createXHR();this.setupEvents(r,a);e?r.open(f,g,h,e,k):r.open(f,g,h);h&&(r.timeout=a.timeout,r.responseType=a.responseType);"withCredentials"in r&&(r.withCredentials=!!a.withCredentials);this.setHeaders(r,m);c?r.send(c):r.send()}catch(Zb){this.error(Zb)}};a.prototype.serializeBody=function(a,c){if(!a||"string"===typeof a||z.FormData&&a instanceof z.FormData)return a;if(c){var b=c.indexOf(";");-1!==b&&(c=c.substring(0,b))}switch(c){case "application/x-www-form-urlencoded":return Object.keys(a).map(function(b){return encodeURIComponent(b)+"\x3d"+encodeURIComponent(a[b])}).join("\x26");case "application/json":return JSON.stringify(a);default:return a}};a.prototype.setHeaders=function(a,c){for(var b in c)c.hasOwnProperty(b)&&a.setRequestHeader(b,c[b])};a.prototype.getHeader=function(a,c){for(var b in a)if(b.toLowerCase()===c.toLowerCase())return a[b]}; a.prototype.setupEvents=function(a,c){function b(a){var c=b.subscriber,d=b.progressSubscriber,e=b.request;d&&d.error(a);var f;try{f=new Kb(this,e)}catch(La){f=La}c.error(f)}function d(a){}function g(a){var b=g.subscriber,c=g.progressSubscriber,d=g.request;if(4===this.readyState){var e=1223===this.status?204:this.status,f="text"===this.responseType?this.response||this.responseText:this.response;0===e&&(e=f?200:0);if(400>e)c&&c.complete(),b.next(a),b.complete();else{c&&c.error(a);a=void 0;try{a=new ra("ajax error "+ e,this,d)}catch(wf){a=wf}b.error(a)}}}var h=c.progressSubscriber;a.ontimeout=b;b.request=c;b.subscriber=this;b.progressSubscriber=h;if(a.upload&&"withCredentials"in a){if(h){var k;k=function(a){k.progressSubscriber.next(a)};z.XDomainRequest?a.onprogress=k:a.upload.onprogress=k;k.progressSubscriber=h}var m;m=function(a){var b=m.progressSubscriber,c=m.subscriber,d=m.request;b&&b.error(a);var e;try{e=new ra("ajax error",this,d)}catch(La){e=La}c.error(e)};a.onerror=m;m.request=c;m.subscriber=this;m.progressSubscriber= h}a.onreadystatechange=d;d.subscriber=this;d.progressSubscriber=h;d.request=c;a.onload=g;g.subscriber=this;g.progressSubscriber=h;g.request=c};a.prototype.unsubscribe=function(){var a=this.xhr;!this.done&&a&&4!==a.readyState&&"function"===typeof a.abort&&a.abort();c.prototype.unsubscribe.call(this)};return a}(m),Jb=function(){return function(c,a,b){this.originalEvent=c;this.xhr=a;this.request=b;this.status=a.status;this.responseType=a.responseType||b.responseType;this.response=rb(this.responseType, a)}}();qb.prototype=Object.create(Error.prototype);var ra=qb,Kb=function(c,a){ra.call(this,"ajax timeout",c,a);this.name="AjaxTimeoutError";return this},Cf=Object.freeze({ajax:O.create,AjaxResponse:Jb,AjaxError:ra,AjaxTimeoutError:Kb}),Df={url:"",deserializer:function(c){return JSON.parse(c.data)},serializer:function(c){return JSON.stringify(c)}},Lb=function(c){function a(a,d){var b=c.call(this)||this;if(a instanceof n)b.destination=d,b.source=a;else{d=b._config=Mc({},Df);b._output=new v;if("string"=== typeof a)d.url=a;else for(var f in a)a.hasOwnProperty(f)&&(d[f]=a[f]);if(!d.WebSocketCtor&&WebSocket)d.WebSocketCtor=WebSocket;else if(!d.WebSocketCtor)throw Error("no WebSocket constructor can be found");b.destination=new X}return b}h(a,c);a.prototype.lift=function(b){var c=new a(this._config,this.destination);c.operator=b;c.source=this;return c};a.prototype._resetState=function(){this._socket=null;this.source||(this.destination=new X);this._output=new v};a.prototype.multiplex=function(a,c,e){var b= this;return new n(function(d){try{b.next(a())}catch(u){d.error(u)}var f=b.subscribe(function(a){try{e(a)&&d.next(a)}catch(L){d.error(L)}},function(a){return d.error(a)},function(){return d.complete()});return function(){try{b.next(c())}catch(u){d.error(u)}f.unsubscribe()}})};a.prototype._connectSocket=function(){var a=this,c=this._config,e=c.WebSocketCtor,f=c.protocol,g=c.url,c=c.binaryType,h=this._output,k=null;try{this._socket=k=f?new e(g,f):new e(g),c&&(this._socket.binaryType=c)}catch(r){h.error(r); 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try{h=a(d)}catch(r){c.error(r);break}if(!h){c.complete();break}}h=void 0;try{h=f(d)}catch(r){c.error(r);break}c.next(h);if(c.closed)break;try{d=b(d)}catch(r){c.error(r);break}}while(1)})};k.iif=function(c,a,b){void 0===a&&(a=T);void 0===b&&(b=T);return Aa(function(){return c()?a:b})};k.interval=function(c,a){void 0===c&&(c=0);void 0===a&&(a=y);if(!W(c)||0>c)c=0;a&&"function"===typeof a.schedule||(a=y);return new n(function(b){b.add(a.schedule(cc,c,{subscriber:b,counter:0,period:c}));return b})};k.merge= bb;k.never=function(){return Cb};k.of=ha;k.onErrorResumeNext=Ba;k.pairs=function(c,a){return a?new n(function(b){var d=Object.keys(c),e=new t;e.add(a.schedule(dc,0,{keys:d,index:0,subscriber:b,subscription:e,obj:c}));return e}):new n(function(a){for(var b=Object.keys(c),e=0;e<b.length&&!a.closed;e++){var f=b[e];c.hasOwnProperty(f)&&a.next([f,c[f]])}a.complete()})};k.partition=function(c,a,b){return[I(a,b)(new n(ia(c))),I(cb(a,b))(new n(ia(c)))]};k.race=db;k.range=function(c,a,b){void 0===c&&(c=0); return new n(function(d){void 0===a&&(a=c,c=0);var e=0,f=c;if(b)return b.schedule(gc,0,{index:e,count:a,start:c,subscriber:d});do{if(e++>=a){d.complete();break}d.next(f++);if(d.closed)break}while(1)})};k.throwError=xa;k.timer=eb;k.using=function(c,a){return new n(function(b){var d;try{d=c()}catch(g){b.error(g);return}var e;try{e=a(d)}catch(g){b.error(g);return}var f=(e?G(e):T).subscribe(b);return function(){f.unsubscribe();d&&d.unsubscribe()}})};k.zip=fb;k.scheduled=Wa;k.EMPTY=T;k.NEVER=Cb;k.config= C;Object.defineProperty(k,"__esModule",{value:!0})}); //# sourceMappingURL=rxjs.umd.min.js.map
    // @ts-ignore
    _modules.rxjs = getExternalModuleSafe(
      !process.env.LOCAL_DEBUG
        ? Object.assign({}, this)
        : Object.assign(require('rxjs'), { operators: require('rxjs/operators') })
    );
  }
  return _modules.rxjs;
};