답안 #15810

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
15810	2015-07-29T12:00:06 Z	comet	빨간 직사각형 (kriii3_QQ)	C++	20 / 20	236 ms	99400 KB

qq

#include<iostream>
using namespace std;
typedef long long ll;
ll n,m,col[3333][3333],st[3333],INDEX[3333];
char a[3333][3333];
int main(){
	ios::sync_with_stdio(0);
	cin>>n>>m;
	for(int i=1;i<=n;i++)cin>>&a[i][1];

	for(int j=1;j<=m;j++)
		for(int i=1;i<=n;i++)
			if(a[i][j]=='R')col[i][j]=col[i-1][j]+(a[i][j]=='R');

	ll ans=0;
	for(int i=1;i<=n;i++){
		int sz=0,cnt;
		st[sz]=0;
		INDEX[sz++]=0;
		for(int j=1;j<=m+1;j++){
			cnt=0;
			while(sz>1&&st[sz-1]>=col[i][j]){
				//cout<<"sz= "<<sz<<endl;
				ans+=(j-INDEX[sz-2]-1ll)*st[sz-1];
				if(cnt){
					ans-=(j-INDEX[sz-2]-1ll)*st[sz-1];
					ans+=(INDEX[sz-1]-INDEX[sz-2])*st[sz-1]*(j-INDEX[sz-1]);
					//ans+=(INDEX[sz-1]-INDEX[sz-2])*(j-INDEX[sz-1]);
				}
				sz--;
				cnt++;
				//cout<<"ans= "<<ans<<endl;
			}
			st[sz]=col[i][j];
			INDEX[sz++]=j;
			//cout<<j<<" "<<ans<<endl;
		}
		//cout<<"i= "<<i<<endl;
	}
	cout<<ans;
}

Subtask #1

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	99400 KB	Output is correct
2	Correct	0 ms	99400 KB	Output is correct
3	Correct	0 ms	99400 KB	Output is correct
4	Correct	0 ms	99400 KB	Output is correct
5	Correct	0 ms	99400 KB	Output is correct
6	Correct	0 ms	99400 KB	Output is correct
7	Correct	0 ms	99400 KB	Output is correct
8	Correct	0 ms	99400 KB	Output is correct
9	Correct	0 ms	99400 KB	Output is correct
10	Correct	0 ms	99400 KB	Output is correct
11	Correct	0 ms	99400 KB	Output is correct
12	Correct	0 ms	99400 KB	Output is correct
13	Correct	0 ms	99400 KB	Output is correct
14	Correct	0 ms	99400 KB	Output is correct
15	Correct	0 ms	99400 KB	Output is correct
16	Correct	0 ms	99400 KB	Output is correct
17	Correct	0 ms	99400 KB	Output is correct
18	Correct	0 ms	99400 KB	Output is correct
19	Correct	0 ms	99400 KB	Output is correct
20	Correct	0 ms	99400 KB	Output is correct
21	Correct	4 ms	99400 KB	Output is correct
22	Correct	5 ms	99400 KB	Output is correct
23	Correct	5 ms	99400 KB	Output is correct
24	Correct	6 ms	99400 KB	Output is correct
25	Correct	4 ms	99400 KB	Output is correct

Subtask #2

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	99400 KB	Output is correct
2	Correct	0 ms	99400 KB	Output is correct
3	Correct	13 ms	99400 KB	Output is correct
4	Correct	8 ms	99400 KB	Output is correct
5	Correct	13 ms	99400 KB	Output is correct
6	Correct	13 ms	99400 KB	Output is correct
7	Correct	12 ms	99400 KB	Output is correct
8	Correct	13 ms	99400 KB	Output is correct
9	Correct	13 ms	99400 KB	Output is correct
10	Correct	10 ms	99400 KB	Output is correct
11	Correct	16 ms	99400 KB	Output is correct
12	Correct	5 ms	99400 KB	Output is correct
13	Correct	23 ms	99400 KB	Output is correct
14	Correct	0 ms	99400 KB	Output is correct
15	Correct	0 ms	99400 KB	Output is correct
16	Correct	0 ms	99400 KB	Output is correct
17	Correct	6 ms	99400 KB	Output is correct
18	Correct	0 ms	99400 KB	Output is correct
19	Correct	0 ms	99400 KB	Output is correct
20	Correct	0 ms	99400 KB	Output is correct
21	Correct	7 ms	99400 KB	Output is correct
22	Correct	6 ms	99400 KB	Output is correct
23	Correct	6 ms	99400 KB	Output is correct
24	Correct	14 ms	99400 KB	Output is correct
25	Correct	15 ms	99400 KB	Output is correct
26	Correct	5 ms	99400 KB	Output is correct
27	Correct	8 ms	99400 KB	Output is correct
28	Correct	6 ms	99400 KB	Output is correct
29	Correct	6 ms	99400 KB	Output is correct
30	Correct	6 ms	99400 KB	Output is correct
31	Correct	176 ms	99400 KB	Output is correct
32	Correct	160 ms	99400 KB	Output is correct
33	Correct	110 ms	99400 KB	Output is correct
34	Correct	158 ms	99400 KB	Output is correct
35	Correct	159 ms	99400 KB	Output is correct
36	Correct	190 ms	99400 KB	Output is correct
37	Correct	235 ms	99400 KB	Output is correct
38	Correct	210 ms	99400 KB	Output is correct
39	Correct	236 ms	99400 KB	Output is correct
40	Correct	167 ms	99400 KB	Output is correct