Submission #872665

#	Time	Username	Problem	Language	Result	Execution time	Memory
872665		HossamHero7	Autobus (COCI22_autobus)	C++14	55 / 70	1087 ms	756 KiB

Main

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define endl '\n'
int edge[75][75];
vector<pair<int,ll>> adj[75];
ll dp[75][75][2];
void solve(){
    int n,m;
    cin>>n>>m;
    for(int i=1;i<=n;i++) for(int j=1;j<=n;j++) edge[i][j] = 1e9;
    for(int i=0;i<m;i++){
        int a,b,c;
        cin>>a>>b>>c;
        edge[a][b] = min(edge[a][b] , c);
    }
    int cnt = 0;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=n;j++) {
            if(edge[i][j] != 1e9) adj[i].push_back({j,edge[i][j]}) , cnt++;
        }
    }
    int k,q;
    cin>>k>>q;
    k = min(k,cnt);
    for(int i=1;i<=n;i++) for(int j=1;j<=n;j++) dp[i][j][0] = (i == j ? 0 : 1e18);
    for(int rem=1;rem<=k;rem++){
        for(int i=1;i<=n;i++){
            for(int j=1;j<=n;j++){
                dp[i][j][rem&1] = dp[i][j][rem-1&1];
                for(auto [ch,c] : adj[i]) dp[i][j][rem&1] = min(dp[ch][j][rem-1&1] + c,dp[i][j][rem&1]);
            }
        }
    }
    while(q--){
        int a,b;
        cin>>a>>b;
        cout<<(dp[a][b][k&1] == 1e18 ? -1 : dp[a][b][k&1])<<endl;
    }
}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);      cout.tie(0);
    int t=1;
    //cin>>t;
    while(t--){
        solve();
    }
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'void solve()':
Main.cpp:30:47: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   30 |                 dp[i][j][rem&1] = dp[i][j][rem-1&1];
      |                                            ~~~^~
Main.cpp:31:26: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   31 |                 for(auto [ch,c] : adj[i]) dp[i][j][rem&1] = min(dp[ch][j][rem-1&1] + c,dp[i][j][rem&1]);
      |                          ^
Main.cpp:31:78: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   31 |                 for(auto [ch,c] : adj[i]) dp[i][j][rem&1] = min(dp[ch][j][rem-1&1] + c,dp[i][j][rem&1]);
      |                                                                           ~~~^~

• Subtask 1: 15 / 15
• Subtask 2: 15 / 15
• Subtask 3: 25 / 25
• Subtask 4: 0 / 15