oj.uz

답안 #644636

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
644636 2022-09-25T04:54:31 Z guagua0407 Toll (BOI17_toll) C++17
0 / 100
 266 ms 99144 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define _ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

void setIO(string s) {
	freopen((s + ".in").c_str(), "r", stdin);
	freopen((s + ".out").c_str(), "w", stdout);
}

int k,n,m,o;
const int mxn=5e4+4;
int dp[mxn][20][5][5];
int ans[5][5];
int tmp[5][5];

void ckmin(int a[5][5],int b[5][5],int c[5][5]){
	for(int x=0;x<5;x++){
		for(int y=0;y<5;y++){
			for(int z=0;z<5;z++){
				a[x][z]=min(a[x][z],b[x][y]+c[y][z]);
			}
		}
	}
}

int main() {_
	//setIO("wayne");
    cin>>k>>n>>m>>o;
	memset(dp,0x3f,sizeof dp);
	for(int i=0;i<m;i++){
		int a,b,t;
		cin>>a>>b>>t;
		dp[a/k][0][a%k][b%k]=t;
	}
	for(int j=1;j<20;j++){
		for(int i=0;i + (1 << j) < (n + k - 1) / k;i++){
			ckmin(dp[i][j],dp[i][j-1],dp[i+(1<<j-1)][j-1]);
		}
	}
	for(int i=0;i<o;i++){
		int a,b;
		cin>>a>>b;
		int node=a/k;
		int length=(b/k)-(a/k);
		memset(ans,0x3f,sizeof ans);
		for(int i=0;i<5;i++){
			ans[i][i]=0;			
		}
		//cout<<length<<'\n';
		for(int i=0;i<20;i++){
			if(length&(1<<i)){
				memset(tmp,0x3f,sizeof tmp);
				ckmin(tmp,ans,dp[node][i]);
				memcpy(ans,tmp,sizeof ans);
			}
		}
		cout<<(ans[a%k][b%k]==0x3f3f3f3f?-1:ans[a%k][b%k])<<'\n';
	}
	return 0;
}
//maybe its multiset not set

Compilation message

toll.cpp: In function 'int main()':
toll.cpp:41:40: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   41 |    ckmin(dp[i][j],dp[i][j-1],dp[i+(1<<j-1)][j-1]);
      |                                       ~^~
toll.cpp: In function 'void setIO(std::string)':
toll.cpp:10:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |  freopen((s + ".in").c_str(), "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
toll.cpp:11:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |  freopen((s + ".out").c_str(), "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 266 ms 99144 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 147 ms 99092 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 36 ms 98124 KB Output is correct
2 Incorrect 40 ms 98080 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 36 ms 98124 KB Output is correct
2 Incorrect 40 ms 98080 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 266 ms 99144 KB Output isn't correct
2 Halted 0 ms 0 KB -