oj.uz

답안 #568299

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
568299 2022-05-25T07:10:45 Z inluminas Toll (BOI17_toll) C++17
0 / 100
 139 ms 168248 KB 
#include"bits/stdc++.h"
using namespace std;

#define ll long long
#define endl "\n"
#define fastio ios_base::sync_with_stdio(false)
#define inf LLONG_MAX
#define l first
#define r second

const int lmt=50001;
ll dp[lmt][17][5][5];

int main(){
	fastio;

	for(int i=0;i<lmt;i++){
		for(int j=0;j<17;j++){
			for(int k=0;k<5;k++){
				for(int l=0;l<5;l++) dp[i][j][k][l]=1e15;
			}
		}
	}

	int k,n,m,q;
	cin>>k>>n>>m>>q;
	for(int i=1;i<=m;i++){
		ll u,v,t;
		cin>>u>>v>>t;
		dp[u/k][0][u%k][v%k]=t;
	}

	for(int mv=1;mv<17;mv++){
		for(int i=0;i<=(n-1)/k;i++){
			for(int j=0;j<k;j++){
				for(int l=0;l<k;l++){
					for(int o=0;o<k;o++){
						int b=i+(1<<(mv-1));
						if(b>(n-1)/k) continue;
						dp[i][mv][j][l]=min(dp[i][mv][j][l],dp[i][mv-1][j][o]+dp[b][mv-1][o][l]);
					}
				}
			}
		}
	}

	while(q--){
		int u,v;
		cin>>u>>v;
		int pre=u/k;

		ll val[k];
		for(int i=0;i<k;i++) val[i]=1e15;
		val[u%k]=0;
		int dis=v/k-u/k;

		for(int j=16;j>=0;j--){
			int b=pre+(1<<j);
			if(b>v/k || dis<(1<<j)) continue;
			dis-=(1<<j);

			ll val2[k];

			for(int i=0;i<k;i++) val2[i]=1e15;

			for(int i=0;i<k;i++){
				for(int l=0;l<k;l++){
					val2[i]=min(val2[i],val[l]+dp[pre][j][l][i]);
				}
			}
			for(int i=0;i<k;i++) val[i]=val2[i];
		}

		ll ans=val[v%k];
		cout<<(ans==1e15?-1:ans)<<endl;
	}
}

Subtask #1
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 126 ms 167568 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 139 ms 168248 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 70 ms 166552 KB Output is correct
2 Incorrect 68 ms 166532 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 70 ms 166552 KB Output is correct
2 Incorrect 68 ms 166532 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 126 ms 167568 KB Output isn't correct
2 Halted 0 ms 0 KB -