Submission #134424

#	Time	Username	Problem	Language	Result	Execution time	Memory
134424		Boxworld	Bitaro the Brave (JOI19_ho_t1)	C++14	100 / 100	108 ms	18040 KiB

joi2019_ho_t1

#include <bits/stdc++.h>
using namespace std;
const int maxN=3010;
int h[maxN],w[maxN];
char s[maxN][maxN];
long long ans=0;
int main(){
	int n,m;
	scanf("%d%d",&n,&m);
	memset(h,0,sizeof(h));
	memset(w,0,sizeof(w));
	for (int i=0;i<n;i++)scanf("%s",s[i]);
	for (int i=n-1;i>=0;i--)
	for (int j=m-1;j>=0;j--){
		if (s[i][j]=='O')h[i]++;
		if (s[i][j]=='I')w[j]++;
		if (s[i][j]=='J')ans+=h[i]*w[j];
	}
	printf("%lld\n",ans);
}

Compilation message (stderr)

joi2019_ho_t1.cpp: In function 'int main()':
joi2019_ho_t1.cpp:9:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
  ~~~~~^~~~~~~~~~~~~~
joi2019_ho_t1.cpp:12:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (int i=0;i<n;i++)scanf("%s",s[i]);
                       ~~~~~^~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50