Language: C

#include 
#include 

int debug=0;

int main(void){
ツ　ツ　double ax, ay, bx, by, cx, cy, px, py;
ツ　ツ　double a, b, c, ap, bp, cp;
ツ　ツ　double tmp;
ツ　ツ　double s2, sa2, sb2, sc2;
ツ　ツ　double s, sa, sb, sc;

ツ　ツ　while(scanf("%lf %lf %lf %lf %lf %lf %lf %lf", &ax, &ay, &bx, &by, &cx, &cy, &px, &py) != -1){
ツ　ツ　ツ　ツ　//ツ各ツ静シツ閉ェツづ個陳キツつウツづーツ計ツ算
ツ　ツ　ツ　ツ　a = sqrt(fabs((bx - cx) * (bx - cx) + (by - cy) * (by- cy)));
ツ　ツ　ツ　ツ　b = sqrt(fabs((ax - cx) * (ax - cx) + (ay - cy) * (ay- cy)));
ツ　ツ　ツ　ツ　c = sqrt(fabs((ax - bx) * (ax - bx) + (ay - by) * (ay- by)));
ツ　ツ　ツ　ツ　ap = sqrt(fabs((ax - px) * (ax - px) + (ay - py) * (ay- py)));
ツ　ツ　ツ　ツ　bp = sqrt(fabs((bx - px) * (bx - px) + (by - py) * (by- py)));
ツ　ツ　ツ　ツ　cp = sqrt(fabs((cx - px) * (cx - px) + (cy - py) * (cy- py)));

ツ　ツ　ツ　ツ　if(debug) printf("[length]a = %.2f, b == %.2f, c = %.2f, ap = %.2f, bp = %.2f, cp = %.2f\n", a, b, c, ap, bp, cp);

ツ　ツ　ツ　ツ　//heron
ツ　ツ　ツ　ツ　tmp = (a + b + c) / 2;
ツ　ツ　ツ　ツ　s2 = tmp * (tmp - a) * (tmp - b) * (tmp - c);
ツ　ツ　ツ　ツ　s = sqrt(s2);
ツ　ツ　ツ　ツ　if(debug) printf("s = %lf\n", s);

ツ　ツ　ツ　ツ　tmp = (a + bp + cp) / 2;
ツ　ツ　ツ　ツ　sa2 = tmp * (tmp - a) * (tmp - bp) * (tmp - cp);
ツ　ツ　ツ　ツ　sa = sqrt(sa2);

ツ　ツ　ツ　ツ　tmp = (b + ap + cp) / 2;
ツ　ツ　ツ　ツ　sb2 = tmp * (tmp - b) * (tmp - ap) * (tmp - cp);
ツ　ツ　ツ　ツ　sb = sqrt(sb2);

ツ　ツ　ツ　ツ　tmp = (c + ap + bp) / 2;
ツ　ツ　ツ　ツ　sc2 = tmp * (tmp - c) * (tmp - ap) * (tmp - bp);
ツ　ツ　ツ　ツ　sc = sqrt(sc2);

ツ　ツ　ツ　ツ　if(debug) printf("sa + sb + sc = %lf\n", sa + sb + sc);

ツ　ツ　ツ　ツ　if(fabs(sa + sb + sc - s) < 0.000000001){
ツ　ツ　ツ　ツ　ツ　ツ　printf("YES\n");
ツ　ツ　ツ　ツ　}else{
ツ　ツ　ツ　ツ　ツ　ツ　printf("NO\n");
ツ　ツ　ツ　ツ　}
ツ　ツ　}
ツ　ツ　return 0;
}

Compiler output:
main.c:1:10: error: #include expects "FILENAME" or <FILENAME>
    1 | #include
      |          ^
main.c:2:10: error: #include expects "FILENAME" or <FILENAME>
    2 | #include
      |          ^
main.c: In function 'main':
main.c:7:3: error: stray '\343' in program
    7 | <U+30C4><U+3000><U+30C4><U+3000>double ax, ay, bx, by, cx, cy, px, py;
      |         ^~~~~~~~
main.c:7:1: error: unknown type name '\U000030c4'
    7 | ツ　ツ　double ax, ay, bx, by, cx, cy, px, py;
      | ^~
main.c:7:7: error: stray '\343' in program
    7 | <U+30C4><U+3000><U+30C4><U+3000>double ax, ay, bx, by, cx, cy, px, py;
      |                         ^~~~~~~~
main.c:7:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'double'
    7 | ツ　ツ　double ax, ay, bx, by, cx, cy, px, py;
      |         ^~~~~~
main.c:8:3: error: stray '\343' in program
    8 | <U+30C4><U+3000><U+30C4><U+3000>double a, b, c, ap, bp, cp;
      |         ^~~~~~~~
main.c:8:1: error: unknown type name '\U000030c4'
    8 | ツ　ツ　double a, b, c, ap, bp, cp;
      | ^~
main.c:8:7: error: stray '\343' in program
    8 | <U+30C4><U+3000><U+30C4><U+3000>double a, b, c, ap, bp, cp;
      |                         ^~~~~~~~
main.c:8:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'double'
    8 | ツ　ツ　double a, b, c, ap, bp, cp;
      |         ^~~~~~
main.c:9:3: error: stray '\343' in program
    9 | <U+30C4><U+3000><U+30C4><U+3000>double tmp;
      |         ^~~~~~~~
main.c:9:1: error: unknown type name '\U000030c4'
    9 | ツ　ツ　double tmp;
      | ^~
main.c:9:7: error: stray '\343' in program
    9 | <U+30C4><U+3000><U+30C4><U+3000>double tmp;
      |                         ^~~~~~~~
main.c:9:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'double'
    9 | ツ　ツ　double tmp;
      |         ^~~~~~
main.c:10:3: error: stray '\343' in program
   10 | <U+30C4><U+3000><U+30C4><U+3000>double s2, sa2, sb2, sc2;
      |         ^~~~~~~~
main.c:10:1: error: unknown type name '\U000030c4'
   10 | ツ　ツ　double s2, sa2, sb2, sc2;
      | ^~
main.c:10:7: error: stray '\343' in program
   10 | <U+30C4><U+3000><U+30C4><U+3000>double s2, sa2, sb2, sc2;
      |                         ^~~~~~~~
main.c:10:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'double'
   10 | ツ　ツ　double s2, sa2, sb2, sc2;
      |         ^~~~~~
main.c:11:3: error: stray '\343' in program
   11 | <U+30C4><U+3000><U+30C4><U+3000>double s, sa, sb, sc;
      |         ^~~~~~~~
main.c:11:1: error: unknown type name '\U000030c4'
   11 | ツ　ツ　double s, sa, sb, sc;
      | ^~
main.c:11:7: error: stray '\343' in program
   11 | <U+30C4><U+3000><U+30C4><U+3000>double s, sa, sb, sc;
      |                         ^~~~~~~~
main.c:11:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'double'
   11 | ツ　ツ　double s, sa, sb, sc;
      |         ^~~~~~
main.c:13:3: error: stray '\343' in program
   13 | <U+30C4><U+3000><U+30C4><U+3000>while(scanf("%lf %lf %lf %lf %lf %lf %lf %lf", &ax, &ay, &bx, &by, &cx, &cy, &px, &py) != -1){
      |         ^~~~~~~~
main.c:13:1: error: unknown type name '\U000030c4'
   13 | ツ　ツ　while(scanf("%lf %lf %lf %lf %lf %lf %lf %lf", &ax, &ay, &bx, &by, &cx, &cy, &px, &py) != -1){
      | ^~
main.c:13:7: error: stray '\343' in program
   13 | <U+30C4><U+3000><U+30C4><U+3000>while(scanf("%lf %lf %lf %lf %lf %lf %lf %lf", &ax, &ay, &bx, &by, &cx, &cy, &px, &py) != -1){
      |                         ^~~~~~~~
main.c:13:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'while'
   13 | ツ　ツ　while(scanf("%lf %lf %lf %lf %lf %lf %lf %lf", &ax, &ay, &bx, &by, &cx, &cy, &px, &py) != -1){
      |         ^~~~~
main.c:14:3: error: stray '\343' in program
   14 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>//<U+30C4><U+5404><U+30C4><U+9759><U+30B7><U+30C4><U+9589><U+30A7><U+30C4><U+3065><U+500B><U+9673><U+30AD><U+30C4><U+3064><U+30A6><U+30C4><U+3065><U+30FC><U+30C4><U+8A08><U+30C4><U+7B97>
      |         ^~~~~~~~
main.c:14:7: error: stray '\343' in program
   14 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>//<U+30C4><U+5404><U+30C4><U+9759><U+30B7><U+30C4><U+9589><U+30A7><U+30C4><U+3065><U+500B><U+9673><U+30AD><U+30C4><U+3064><U+30A6><U+30C4><U+3065><U+30FC><U+30C4><U+8A08><U+30C4><U+7B97>
      |                         ^~~~~~~~
main.c:14:11: error: stray '\343' in program
   14 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>//<U+30C4><U+5404><U+30C4><U+9759><U+30B7><U+30C4><U+9589><U+30A7><U+30C4><U+3065><U+500B><U+9673><U+30AD><U+30C4><U+3064><U+30A6><U+30C4><U+3065><U+30FC><U+30C4><U+8A08><U+30C4><U+7B97>
      |                                         ^~~~~~~~
main.c:14:15: error: stray '\343' in program
   14 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>//<U+30C4><U+5404><U+30C4><U+9759><U+30B7><U+30C4><U+9589><U+30A7><U+30C4><U+3065><U+500B><U+9673><U+30AD><U+30C4><U+3064><U+30A6><U+30C4><U+3065><U+30FC><U+30C4><U+8A08><U+30C4><U+7B97>
      |                                                         ^~~~~~~~
main.c:15:3: error: stray '\343' in program
   15 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>a = sqrt(fabs((bx - cx) * (bx - cx) + (by - cy) * (by- cy)));
      |         ^~~~~~~~
main.c:15:7: error: stray '\343' in program
   15 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>a = sqrt(fabs((bx - cx) * (bx - cx) + (by - cy) * (by- cy)));
      |                         ^~~~~~~~
main.c:15:11: error: stray '\343' in program
   15 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>a = sqrt(fabs((bx - cx) * (bx - cx) + (by - cy) * (by- cy)));
      |                                         ^~~~~~~~
main.c:15:15: error: stray '\343' in program
   15 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>a = sqrt(fabs((bx - cx) * (bx - cx) + (by - cy) * (by- cy)));
      |                                                         ^~~~~~~~
main.c:16:3: error: stray '\343' in program
   16 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>b = sqrt(fabs((ax - cx) * (ax - cx) + (ay - cy) * (ay- cy)));
      |         ^~~~~~~~
main.c:16:7: error: stray '\343' in program
   16 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>b = sqrt(fabs((ax - cx) * (ax - cx) + (ay - cy) * (ay- cy)));
      |                         ^~~~~~~~
main.c:16:11: error: stray '\343' in program
   16 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>b = sqrt(fabs((ax - cx) * (ax - cx) + (ay - cy) * (ay- cy)));
      |                                         ^~~~~~~~
main.c:16:15: error: stray '\343' in program
   16 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>b = sqrt(fabs((ax - cx) * (ax - cx) + (ay - cy) * (ay- cy)));
      |                                                         ^~~~~~~~
main.c:17:3: error: stray '\343' in program
   17 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>c = sqrt(fabs((ax - bx) * (ax - bx) + (ay - by) * (ay- by)));
      |         ^~~~~~~~
main.c:17:7: error: stray '\343' in program
   17 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>c = sqrt(fabs((ax - bx) * (ax - bx) + (ay - by) * (ay- by)));
      |                         ^~~~~~~~
main.c:17:11: error: stray '\343' in program
   17 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>c = sqrt(fabs((ax - bx) * (ax - bx) + (ay - by) * (ay- by)));
      |                                         ^~~~~~~~
main.c:17:15: error: stray '\343' in program
   17 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>c = sqrt(fabs((ax - bx) * (ax - bx) + (ay - by) * (ay- by)));
      |                                                         ^~~~~~~~
main.c:18:3: error: stray '\343' in program
   18 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>ap = sqrt(fabs((ax - px) * (ax - px) + (ay - py) * (ay- py)));
      |         ^~~~~~~~
main.c:18:7: error: stray '\343' in program
   18 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>ap = sqrt(fabs((ax - px) * (ax - px) + (ay - py) * (ay- py)));
      |                         ^~~~~~~~
main.c:18:11: error: stray '\343' in program
   18 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>ap = sqrt(fabs((ax - px) * (ax - px) + (ay - py) * (ay- py)));
      |                                         ^~~~~~~~
main.c:18:15: error: stray '\343' in program
   18 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>ap = sqrt(fabs((ax - px) * (ax - px) + (ay - py) * (ay- py)));
      |                                                         ^~~~~~~~
main.c:19:3: error: stray '\343' in program
   19 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>bp = sqrt(fabs((bx - px) * (bx - px) + (by - py) * (by- py)));
      |         ^~~~~~~~
main.c:19:7: error: stray '\343' in program
   19 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>bp = sqrt(fabs((bx - px) * (bx - px) + (by - py) * (by- py)));
      |                         ^~~~~~~~
main.c:19:11: error: stray '\343' in program
   19 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>bp = sqrt(fabs((bx - px) * (bx - px) + (by - py) * (by- py)));
      |                                         ^~~~~~~~
main.c:19:15: error: stray '\343' in program
   19 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>bp = sqrt(fabs((bx - px) * (bx - px) + (by - py) * (by- py)));
      |                                                         ^~~~~~~~
main.c:20:3: error: stray '\343' in program
   20 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>cp = sqrt(fabs((cx - px) * (cx - px) + (cy - py) * (cy- py)));
      |         ^~~~~~~~
main.c:20:7: error: stray '\343' in program
   20 | <U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000><U+30C4><U+3000>cp = sqrt(fabs((cx - px) * (cx - px) + (cy - py) * (cy- py)));
      |                         ^~~~~~~~
main.c:20:11: error: stray '\343' in program
   20 | <U+30C4><U+3000><U+30C4><U+3000><U