Submission #645693

#	Time	Username	Problem	Language	Result	Execution time	Memory
645693		asdfghjkl	Quality Of Living (IOI10_quality)	C++14	Compilation error	0 ms	0 KiB

quality

#include <bits/stdc++.h>
#include<vector>

using namespace std;
bool binar (vector<vector<int>> A, vector<vector<int>> B, int R, int C, int H, int W, int k);

int main () {
int R, C, H, W, k, mn=1;
cin>>R>>C>>H>>W;
int mx=R*C;
vector<vector<int>> A(R, vector<int>(C));
vector<vector<int>> B(R, vector<int>(C));
for (int i=0; i<R; i++)
{
    for (int o=0; o<C; o++)
    {
        cin>>A[i][o];
    }
}
while (mn!=mx)
{
    k=(mx+mn)/2;
 if   (binar (A,B,R,C,H,W,k)==1) mx=k-1;
    else mn=k+1;
}
cout<<mn;
return 0;
};

bool binar (vector<vector<int>> A, vector<vector<int>> B, int R, int C, int H, int W, int k)
{
    bool x=0;
    bool pref[R][C];
    for (int i=0; i<R; i++)
    {
        for (int o=0; o<C; o++)
        {
            if (A[i][o]<k) B[i][o]=1;
            else B[i][o]=0;
   if  (i==0&&o==0) pref [i][o]==B[i][o];
           else     if  (i==0&&o>0) pref [i][o]==B[i][o]+pref[i][o-1];
          else      if  (i>0&&o==0) pref [i][o]==B[i][o]+pref[i-1][o];
          else  pref[i][o]=pref[i-1][o]+pref[i][o-1]-pref[i-1][o-1]+B[i][o];
        }
    }
     for (int i=0; i<R-H; i++)
    {
        for (int o=0; o<C-W; o++)
        {
         if  ((pref[i+H][o+W]-pref[i-1][o+W]-pref[i+H][o-1]+pref[i-1][o-1])>=(H*W)/2) x=1;
        }
    }
    return x;
}

Compilation message (stderr)

quality.cpp: In function 'bool binar(std::vector<std::vector<int> >, std::vector<std::vector<int> >, int, int, int, int, int)':
quality.cpp:40:32: warning: value computed is not used [-Wunused-value]
   40 |    if  (i==0&&o==0) pref [i][o]==B[i][o];
quality.cpp:41:48: warning: value computed is not used [-Wunused-value]
   41 |            else     if  (i==0&&o>0) pref [i][o]==B[i][o]+pref[i][o-1];
      |                                     ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
quality.cpp:42:48: warning: value computed is not used [-Wunused-value]
   42 |           else      if  (i>0&&o==0) pref [i][o]==B[i][o]+pref[i-1][o];
      |                                     ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccFDVtGA.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccIJy59w.o:quality.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccFDVtGA.o: in function `main':
grader.cpp:(.text.startup+0xe9): undefined reference to `rectangle(int, int, int, int, int (*) [3001])'
collect2: error: ld returned 1 exit status