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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#26167 | #1274. Walking Plan | Wu_Ren | AC ✓ | 382ms | 8288kb | C++17 | 1.2kb | 2022-04-06 20:10:10 | 2022-04-29 03:09:32 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
int T,n,m;
struct mat{
int a[60][60];
mat(){
for(int i=1;i<=n;i++) for(int j=1;j<=n;j++) a[i][j]=1e9;
}
int* operator [](int b){
return a[b];
}
mat operator *(mat b){
mat res;
for(int i=1;i<=n;i++) for(int k=1;k<=n;k++) for(int j=1;j<=n;j++) res[i][j]=min(res[i][j],a[i][k]+b[k][j]);
return res;
}
void out(){
for(int i=1;i<=n;i++,puts("")) for(int j=1;j<=n;j++) printf("%d ",a[i][j]);
}
}a[110],b[210];
mat min(mat a,mat b){
mat res;
for(int i=1;i<=n;i++) for(int j=1;j<=n;j++) res[i][j]=min(a[i][j],b[i][j]);
return res;
}
void sol(){
scanf("%d%d",&n,&m);
mat G;
for(int i=1,u,v,w;i<=m;i++) scanf("%d%d%d",&u,&v,&w),G[u][v]=min(G[u][v],w);
a[1]=mat();
for(int i=1;i<=n;i++) a[1][i][i]=0;
b[0]=a[0]=a[1];
for(int i=1;i<=200;i++) b[i]=b[i-1]*G;
a[1]=b[100];
for(int i=2;i<=100;i++) a[i]=a[i-1]*a[1];
for(int i=199;i>=0;i--) b[i]=min(b[i],b[i+1]);
int q;
scanf("%d",&q);
while(q--){
int s,t,k,res=1e9;
scanf("%d%d%d",&s,&t,&k);
for(int i=1;i<=n;i++) res=min(res,a[k/100][s][i]+b[k%100][i][t]);
printf("%d\n",res<5e8?res:-1);
}
}
int main(){
scanf("%d",&T);
while(T--) sol();
}
Details
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Test #1:
score: 100
Accepted
time: 5ms
memory: 8188kb
input:
2 3 3 1 2 1 2 3 10 3 1 100 3 1 1 1 1 2 1 1 3 1 2 1 1 2 1 1 2 1 1
output:
111 1 11 -1
result:
ok 4 lines
Test #2:
score: 0
Accepted
time: 199ms
memory: 8280kb
input:
10 5 10 4 2 55 2 1 26 3 4 83 5 2 16 4 5 54 3 4 38 2 1 68 2 5 1 4 5 85 4 2 60 20 2 1 13 1 4 17 3 2 20 2 4 16 4 2 17 4 2 2 3 1 2 1 5 10 2 1 8 4 5 15 4 2 16 3 1 18 5 2 7 4 2 9 4 3 16 1 4 18 3 2 5 1 5 9 5 1 19 1 2 16 20 50 4 16 25 3 16 990 9 18 863 19 12 236 4 10 360 13 4 585 14 17 164 8 18 198 2 17 804...
output:
128 -1 246 -1 191 70 119 -1 94 173 189 253 67 123 -1 -1 125 -1 195 -1 -1 23449 3476 18735 17412 23124 29499 26452 9757 21128 9524 -1 4486 8797 8041 33717 32669 5108 32534 13020 22800 4411 3529 37460 4191 15863 5342 22005 -1 14496 16535 13644 -1 33956 28717 24721 13816 26289 8840 28137 9991 14430 -1 ...
result:
ok 406120 lines
Test #3:
score: 0
Accepted
time: 382ms
memory: 8288kb
input:
10 5 10 4 1 62 3 5 93 4 5 99 2 5 63 2 4 26 5 3 31 2 5 14 5 3 54 1 2 47 1 5 18 200 2 5 8 3 1 17 1 5 11 2 1 17 4 2 1 4 2 13 5 1 13 5 2 2 1 4 8 2 3 4 1 1 1 1 5 7 3 5 3 5 3 12 1 4 18 3 1 11 5 4 2 1 3 4 5 5 13 2 3 12 1 4 19 3 5 17 3 5 20 3 3 1 5 5 9 1 5 7 2 4 9 4 5 16 1 3 19 4 1 18 2 1 16 3 5 17 4 5 7 3 ...
output:
365 -1 466 763 109 649 -1 -1 343 137 135 288 217 775 883 -1 -1 173 868 531 883 1085 1333 124 620 288 431 744 848 872 763 1085 339 -1 343 -1 341 -1 161 784 -1 109 244 49 -1 424 871 -1 -1 872 587 393 270 763 61 701 620 -1 -1 270 558 -1 559 341 -1 540 135 -1 857 -1 -1 810 31 713 467 -1 -1 -1 277 784 69...
result:
ok 900200 lines