Submission #381637

#	Time	Username	Problem	Language	Result	Execution time	Memory
381637		Iwanttobreakfree	Bitaro the Brave (JOI19_ho_t1)	C++17	50 / 100	1084 ms	23264 KiB

joi2019_ho_t1

#include <iostream>
#include <vector>
using namespace std;
int main(){
	cin.tie(0);
	ios::sync_with_stdio(false);
	long long int h,w;
	cin>>h>>w;
	char grid[h][w];
	int canti[h][w];
	int canto[h][w];
	vector<pair<int,int> > v;
	for(int i=0;i<h;i++){
		for(int j=0;j<w;j++){
			cin>>grid[i][j];
			canti[i][j]=0;
			canto[i][j]=0;
			if(grid[i][j]=='J')v.push_back(make_pair(i,j));
			if(grid[i][j]=='I'){
				for(int x=i;x>=0;x--)canti[x][j]++;
			}
			if(grid[i][j]=='O'){
				for(int x=j;x>=0;x--)canto[i][x]++;
			}
		}
	}
	int n=v.size();
	long long int sol=0;
	for(int j=0;j<n;j++){
		int x=v[j].first,y=v[j].second;
		sol+=canti[x][y]*canto[x][y];
	}
	cout<<sol<<'\n';
}

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 0 / 50