Submission #97610

#	Time	Username	Problem	Language	Result	Execution time	Memory
97610		maruii	Bitaro the Brave (JOI19_ho_t1)	C++14	100 / 100	129 ms	79708 KiB

joi2019_ho_t1

#include <bits/stdc++.h>
using namespace std;
char s[3005][3005];
int H, W, O[3005][3005], I[3005][3005];
int main(){
	scanf("%d%d",&H,&W);
	for(int i=0; i<H; ++i) scanf("%s",s[i]);
	long long ans=0;
	for(int i=H-1; i>=0; --i)
		for(int j=W-1; j>=0; --j)
			O[i][j] = O[i][j+1]+(s[i][j]=='O'), I[i][j] = I[i+1][j]+(s[i][j]=='I'), ans += (s[i][j]=='J')*O[i][j]*I[i][j];
	printf("%lld",ans);
	return 0;
}

Compilation message (stderr)

joi2019_ho_t1.cpp: In function 'int main()':
joi2019_ho_t1.cpp:6:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&H,&W);
  ~~~~~^~~~~~~~~~~~~~
joi2019_ho_t1.cpp:7:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=0; i<H; ++i) scanf("%s",s[i]);
                         ~~~~~^~~~~~~~~~~

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