//set many funcs template
//Ver.20181228
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<stdbool.h>
#include<time.h>
#define inf 1072114514
#define llinf 4154118101919364364
#define mod 1000000007
#define pi 3.1415926535897932384

int max(int a,int b){if(a>b){return a;}return b;}
int min(int a,int b){if(a<b){return a;}return b;}
int zt(int a,int b){return max(a,b)-min(a,b);}
int round(int a,int b){if((a%b)*2 >= b){return (a/b)+1;}return a/b;}
int ceil(int a,int b){if(a%b==0){return a/b;}return (a/b)+1;}
int gcd(int a,int b){int c;while(b!=0){c=a%b;a=b;b=c;}return a;}
int lcm(int a,int b){int c=gcd(a,b);a/=c;return a*b;}
int nCr(int a,int b){int i,r=1;for(i=1;i<=b;i++){r*=(a+1-i);r/=i;}return r;}
int nHr(int a,int b){return nCr(a+b-1,b);}
int fact(int a){int i,r=1;for(i=1;i<=a;i++){r*=i;}return r;}
int pow(int a,int b){int i,r=1;for(i=1;i<=b;i++){r*=a;}return r;}
int dsum(int x){int r=0;while(x){r+=(x%10);x/=10;}return r;}
int dsumb(int x,int b){int r=0;while(x){r+=(x%b);x/=b;}return r;}
int sankaku(int x){return ((1+x)*x)/2;}
long long llmax(long long a,long long b){if(a>b){return a;}return b;}
long long llmin(long long a,long long b){if(a<b){return a;}return b;}
long long llzt(long long a,long long b){return llmax(a,b)-llmin(a,b);}
long long llround(long long a,long long b){if((a%b)*2 >= b){return (a/b)+1;}return a/b;}
long long llceil(long long a,long long b){if(a%b==0){return a/b;}return (a/b)+1;}
long long llgcd(long long a,long long b){long long c;while(b!=0){c=a%b;a=b;b=c;}return a;}
long long lllcm(long long a,long long b){long long c=llgcd(a,b);a/=c;return a*b;}
long long llnCr(long long a,long long b){long long i,r=1;for(i=1;i<=b;i++){r*=(a+1-i);r/=i;}return r;}
long long llnHr(long long a,long long b){return llnCr(a+b-1,b);}
long long llfact(long long a){long long i,r=1;for(i=1;i<=a;i++){r*=i;}return r;}
long long llpow(long long a,long long b){long long i,r=1;for(i=1;i<=b;i++){r*=a;}return r;}
long long lldsum(long long x){long long r=0;while(x){r+=(x%10);x/=10;}return r;}
long long lldsumb(long long x,long long b){long long r=0;while(x){r+=(x%b);x/=b;}return r;}
long long llsankaku(long long x){return ((1+x)*x)/2;}
double dbmax(double a,double b){if(a>b){return a;}return b;}
double dbmin(double a,double b){if(a<b){return a;}return b;}
double dbzt(double a,double b){return dbmax(a,b)-dbmin(a,b);}
int sortfncsj(const void *a,const void *b){if(*(int *)a>*(int *)b){return 1;}if(*(int *)a==*(int *)b){return 0;}return -1;}
int sortfnckj(const void *a,const void *b){if(*(int *)a<*(int *)b){return 1;}if(*(int *)a==*(int *)b){return 0;}return -1;}
int llsortfncsj(const void *a,const void *b){if(*(long long *)a>*(long long *)b){return 1;}if(*(long long *)a==*(long long *)b){return 0;}return -1;}
int llsortfnckj(const void *a,const void *b){if(*(long long *)a<*(long long *)b){return 1;}if(*(long long *)a==*(long long *)b){return 0;}return -1;}
int dbsortfncsj(const void *a,const void *b){if(*(double *)a>*(double *)b){return 1;}if(*(double *)a==*(double *)b){return 0;}return -1;}
int dbsortfnckj(const void *a,const void *b){if(*(double *)a<*(double *)b){return 1;}if(*(double *)a==*(double *)b){return 0;}return -1;}
int strsortfncsj(const void *a,const void *b){return strcmp((char *)a,(char *)b);}
int strsortfnckj(const void *a,const void *b){return strcmp((char *)b,(char *)a);}
int chsortfncsj(const void *a,const void *b){if(*(char *)a>*(char *)b){return 1;}if(*(char *)a==*(char *)b){return 0;}return -1;}
int chsortfnckj(const void *a,const void *b){if(*(char *)a<*(char *)b){return 1;}if(*(char *)a==*(char *)b){return 0;}return -1;}

void shuffledget(int x[],int n){
    srand(time(0));
    int i,b[524288],p,c;
    for(i=0;i<n;i++){
        b[i]=i;
    }
    for(i=n;i>=1;i--){
        p=rand()%i;
        c=b[i-1];b[i-1]=b[p];b[p]=c;
    }
    for(i=0;i<n;i++){
        scanf("%d",&x[b[i]]);
    }
}

int dx4[4]={1,-1,0,0};
int dy4[4]={0,0,1,-1};
int dx8[8]={-1,-1,-1,0,0,1,1,1};
int dy8[8]={-1,0,1,-1,1,-1,0,1};

int search(int x,int a[],int n){
    int st=0,fi=n-1,te;
    while(st<=fi){
        te=(st+fi)/2;
        if(a[te]<x){st=te+1;}else{fi=te-1;}
    }
    return st;
}

void prarr(int arr[],int n){
  int i;
  for(i=0;i<n;i++){
    if(i){printf(" ");}
    printf("%d",arr[i]);
  }
  printf("\n");
  return;
}

typedef struct{
int val;
int node;
}sd;

int sdsortfnc(const void *a,const void *b){
if(((sd*)a)->val < ((sd*)b)->val){return -1;}
if(((sd*)a)->val > ((sd*)b)->val){return 1;}
return 0;
}

int cbz(int fx,int fy,int tx,int ty,int bsum[2048][2048]){
    if(fx>tx || fy>ty){return 0;}
    if(fx==0 && fy == 0){return bsum[tx][ty];}
    else if(fx==0){
        return bsum[tx][ty]-bsum[tx][fy-1];
    }
    else if(fy==0){
        return bsum[tx][ty]-bsum[fx-1][ty];
    }
    else{
        return bsum[tx][ty]-bsum[tx][fy-1]-bsum[fx-1][ty]+bsum[fx-1][fy-1];
    }
}

void conv(int h,int w,int bf[2048][2048],int bsum[2048][2048]){
  int i,j;
  for(i=0;i<h;i++){
      for(j=0;j<w;j++){
          if(j==0){
              bsum[i][j]=bf[i][j];
          }
          else{
              bsum[i][j]=bsum[i][j-1]+bf[i][j];
          }
      }
  }
  for(i=0;i<h;i++){
      for(j=0;j<w;j++){
          if(i!=0){
              bsum[i][j]=bsum[i-1][j]+bsum[i][j];
          }
      }
  }
}

int main(void){
    int i,j,n,m,k,a,b,c,d,h,w,r=0,l,t,q;
    int ver[2048][2048]={0},ted[2048][2048]={0},yed[2048][2048]={0};
    int vrw[2048][2048]={0},trw[2048][2048]={0},yrw[2048][2048]={0};
    char s[2048][2048];
    scanf("%d%d%d",&n,&m,&q);
    for(i=0;i<n;i++){scanf("%s",s[i]);}
    for(i=0;i<n;i++){
      for(j=0;j<m;j++){
        ver[i][j]=s[i][j]-'0';
      }
    }
    for(i=0;i<n;i++){
      for(j=0;j<m-1;j++){
        if(s[i][j]=='1'&&s[i][j+1]=='1'){
          yed[i][j]=1;
        }
      }
    }
    for(j=0;j<m;j++){
      for(i=0;i<n-1;i++){
        if(s[i][j]=='1'&&s[i+1][j]=='1'){
          ted[i][j]=1;
        }
      }
    }
    conv(n,m,ver,vrw);
    conv(n,m,yed,yrw);
    conv(n,m,ted,trw);
    for(i=0;i<q;i++){
      scanf("%d%d%d%d",&a,&b,&c,&d);
      a--;b--;c--;d--;
      printf("%d\n",cbz(a,b,c,d,vrw)-cbz(a,b,c,d-1,yrw)-cbz(a,b,c-1,d,trw));
    }
    return 0;
}


Measured memory_bytes: 104064