Submission #253388

#	Time	Username	Problem	Language	Result	Execution time	Memory
253388		ChrisT	Bitaro the Brave (JOI19_ho_t1)	C++17	100 / 100	106 ms	17916 KiB

joi2019_ho_t1

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

Compilation message (stderr)

joi2019_ho_t1.cpp: In function 'int main()':
joi2019_ho_t1.cpp:6:8: 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:7:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (int i = 1; i <= n; i++) scanf ("%s",grid[i]+1);
                               ~~~~~~^~~~~~~~~~~~~~~~

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