Submission #471478

#	Time	Username	Problem	Language	Result	Execution time	Memory
471478		fuad27	Bitaro the Brave (JOI19_ho_t1)	C++17	100 / 100	292 ms	20660 KiB

joi2019_ho_t1

#include<bits/stdc++.h>
using namespace std;
#define int long long
 main () {
	int h, w;
	cin >> h >> w;
	string v[h];
	for(int i = 0;i<h;i++)cin>>v[i];
	int cnt[w] = {0}, ans = 0, k = 0;
	for(int i = h-1;i>=0;i--) {
		k = 0;
		for(int j = w-1;j>=0;j--) {
			if(v[i][j] == 'J')ans+=cnt[j]*k;
			else if(v[i][j] == 'O')k++;
			else cnt[j]++;
		}
	}
	cout<<ans<<endl;
}

Compilation message (stderr)

joi2019_ho_t1.cpp:4:2: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    4 |  main () {
      |  ^~~~

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