Submission #401372

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Source Code Expand

#include<bits/stdc++.h>
#include<vector>
#include<algorithm>
using namespace std;

/**
 * vector<int>ar(3);
 * for(auto&e:ar){
 *     scanf("%d",&e);
 * }
 * sort(ar.begin(),ar.end())
 * int sum=accumulate(ar.begin(),ar.end(),0);
 ***/

int main(){
    double pai=3.141592653589;
    long a,b,r,c,k,n,tmp;
    long long ans=0;
    scanf("%ld %ld %ld",&r,&c,&k);
    long x[c],y[r],chk[r][c];
    for(long i=0;i<r;i++){
        y[i]=0;
        for(long j=0;j<c;j++){
            x[j]=0;
            chk[i][j]=0;
        }
    }
    scanf("%ld",&n);
    for(long i=0;i<n;i++){
        scanf("%ld %ld",&a,&b);
        y[a-1]+=1;
        x[b-1]+=1;
        chk[a-1][b-1]=1;
    }
    for(long i=0;i<r;i++){
        for(long j=0;j<c;j++){
            if(chk[i][j]==1){
                tmp=x[j]+y[i]-1;
            }else{
                tmp=x[j]+y[i];
            }
            if(tmp==k) ans++;
        }
    }
    printf("%lld\n",ans);
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:19:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%ld %ld %ld",&r,&c,&k);
                                  ^
./Main.cpp:28:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%ld",&n);
                    ^
./Main.cpp:30:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%ld %ld",&a,&b);
                               ^

Judge Result