#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(),x.end()
#define vi vector<int>
using namespace std;
ll dp[50001][17][5][5];int k;
void pre(int i,int j,int ii,int jj,int iii,int jjj){
for(int x=0;x<k;x++){
for(int y=0;y<k;y++){
for(int z=0;z<k;z++){
dp[i][j][x][y]=min(dp[i][j][x][y],dp[ii][jj][x][z]+dp[iii][jjj][z][y]);
}
}
}
}
int main(){
ios_base::sync_with_stdio(0);cin.tie(0);
int n,m,o;cin>>k>>n>>m>>o;
for(int i=0;i<50001;i++)for(int j=0;j<17;j++)for(int t=0;t<5;t++)for(int l=0;l<5;l++)dp[i][j][t][l]=1e10;
while(m--){
int a,b,t;cin>>a>>b>>t;
dp[a/k][0][a%k][b%k]=t;
}
for(int j=1;j<17;j++){
for(int i=0;i+(1<<j)<(n+k-1)/k;i++){
pre(i,j,i,j-1,i+(1<<j-1),j-1);
}
}ll ans[5]={0},tmp[5]={0};
while(o--){
int a,b;cin>>a>>b;
for(int i=0;i<k;i++)ans[i]=0;
int cur=a/k,dest=b/k;
for(int i=16;i>=0;i--){
if(cur+(1<<i)<=dest){
for(int x=0;x<k;x++)tmp[x]=1e10;
for(int y=0;y<k;y++){
for(int z=0;z<k;z++){
tmp[y]=min(tmp[y],ans[z]+dp[cur][i][z][y]);
}
}for(int x=0;x<k;x++)ans[x]=tmp[x];
cur+=(1<<i);
}
}cout<<(ans[b%k]>=1e10?-1:ans[b%k])<<'\n';
}
}
Compilation message
toll.cpp: In function 'int main()':
toll.cpp:30:34: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
30 | pre(i,j,i,j-1,i+(1<<j-1),j-1);
| ~^~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
67 ms |
166736 KB |
Output is correct |
2 |
Correct |
32 ms |
166760 KB |
Output is correct |
3 |
Correct |
31 ms |
166728 KB |
Output is correct |
4 |
Correct |
31 ms |
166740 KB |
Output is correct |
5 |
Correct |
32 ms |
166724 KB |
Output is correct |
6 |
Correct |
33 ms |
166744 KB |
Output is correct |
7 |
Correct |
33 ms |
166748 KB |
Output is correct |
8 |
Correct |
68 ms |
166780 KB |
Output is correct |
9 |
Correct |
64 ms |
166716 KB |
Output is correct |
10 |
Correct |
48 ms |
166740 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
107 ms |
166736 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
31 ms |
166748 KB |
Output is correct |
2 |
Incorrect |
35 ms |
166524 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
31 ms |
166748 KB |
Output is correct |
2 |
Incorrect |
35 ms |
166524 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
67 ms |
166736 KB |
Output is correct |
2 |
Correct |
32 ms |
166760 KB |
Output is correct |
3 |
Correct |
31 ms |
166728 KB |
Output is correct |
4 |
Correct |
31 ms |
166740 KB |
Output is correct |
5 |
Correct |
32 ms |
166724 KB |
Output is correct |
6 |
Correct |
33 ms |
166744 KB |
Output is correct |
7 |
Correct |
33 ms |
166748 KB |
Output is correct |
8 |
Correct |
68 ms |
166780 KB |
Output is correct |
9 |
Correct |
64 ms |
166716 KB |
Output is correct |
10 |
Correct |
48 ms |
166740 KB |
Output is correct |
11 |
Incorrect |
107 ms |
166736 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |