Submission #401368

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Source Code Expand

//#include "inspect.hpp"
#include <vector>
#include <map>
#include <algorithm>
#include <cstdio>
using namespace std;

int main(){
	int R,C,K,N;
	scanf("%d%d%d%d",&R,&C,&K,&N);
	if(C>1000)return 1;
	vector<int>vr(R),vc(C);
	vector<vector<int> >candy(R);
	for(int i=0;i<N;i++){
		int r,c;
		scanf("%d%d",&r,&c),r--,c--;
		vr[r]++,vc[c]++;
		candy[r].push_back(c);
	}
	long long r=0;
	map<int,int>mc;
	for(auto &e:vc)mc[e]++;
	for(int i=0;i<R;i++)for(int j=0;j<C;j++)r+=vr[i]+vc[j]==K+(find(candy[i].begin(),candy[i].end(),j)!=candy[i].end());
	//	r+=mc[K-vr[i]];
	//	for(auto &e:candy[i])r+=vc[e]+vr[i]==K+1;
	//}
	printf("%lld\n",r);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:10:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d%d",&R,&C,&K,&N);
                               ^
./Main.cpp:16:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&r,&c),r--,c--;
                              ^

Judge Result