oj.uz

Submission #602097

# Submission time Handle Problem Language Result Execution time Memory
602097 2022-07-22T14:52:24 Z A_D Shortcut (IOI16_shortcut) C++14
0 / 100
 1 ms 380 KB 
#include "shortcut.h"

#include <bits/stdc++.h>

using namespace std;

const int N=3e3+100;

long long vis[N][N];
vector<long long> dd;
vector<pair<long long,int>> g[N];
long long cc;
int nn;
void dfs(int u,int v)
{
    for(auto x:g[u]){
        if(x.first+vis[u][v]<vis[x.second][v]){
            vis[x.second][v]=vis[u][v]+x.first;
            dfs(x.second,v);
        }
    }
}

long long con(int l,int r)
{
    g[l].push_back({cc,r});
    g[r].push_back({cc,l});

    for(int i=0;i<nn;i++){
        for(int j=0;j<nn;j++){
            vis[i][j]=1e18;
        }
    }
    for(int i=0;i<nn;i++){
        vis[i][i]=0;
        dfs(i,i);
    }
    long long ret=0;
    for(int i=0;i<nn;i++){
        for(int j=0;j<nn;j++){
            ret=max(ret,vis[i][j]+dd[i]+dd[j]);
        }
    }

    g[l].pop_back();
    g[r].pop_back();
    return ret;
}


long long find_shortcut(int n,vector<int> l,vector<int> d,int c)
{
    if(n>10)return 0;
    nn=n;
    cc=c;
    for(auto x:d)dd.push_back(x);
    for(int i=0;i<n;i++){
        g[i].clear();
    }
    /*
    for(int i=0;i<n;i++){
        g[i].push_back({d[i],i+n});
        g[i+n].push_back({d[i],i});
    }
    */
    for(int i=0;i<n-1;i++){
        g[i].push_back({l[i],i+1});
        g[i+1].push_back({l[i],i});
    }
    long long ans=1e18;
    for(int i=0;i<n;i++){
        for(int j=i+1;j<n;j++){
            long long me=con(i,j);
            ans=min(ans,me);
        }
    }
    return ans;
}




/*
4 10
10 20 20
0 40 0 30










4 1
2 2 2
1 10 10 1
*/

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB n = 4, 80 is a correct answer
2 Correct 1 ms 380 KB n = 9, 110 is a correct answer
3 Correct 1 ms 340 KB n = 4, 21 is a correct answer
4 Correct 0 ms 380 KB n = 3, 4 is a correct answer
5 Incorrect 1 ms 340 KB n = 2, incorrect answer: jury 62 vs contestant 72
6 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB n = 4, 80 is a correct answer
2 Correct 1 ms 380 KB n = 9, 110 is a correct answer
3 Correct 1 ms 340 KB n = 4, 21 is a correct answer
4 Correct 0 ms 380 KB n = 3, 4 is a correct answer
5 Incorrect 1 ms 340 KB n = 2, incorrect answer: jury 62 vs contestant 72
6 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB n = 4, 80 is a correct answer
2 Correct 1 ms 380 KB n = 9, 110 is a correct answer
3 Correct 1 ms 340 KB n = 4, 21 is a correct answer
4 Correct 0 ms 380 KB n = 3, 4 is a correct answer
5 Incorrect 1 ms 340 KB n = 2, incorrect answer: jury 62 vs contestant 72
6 Halted 0 ms 0 KB -

Subtask #4
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB n = 4, 80 is a correct answer
2 Correct 1 ms 380 KB n = 9, 110 is a correct answer
3 Correct 1 ms 340 KB n = 4, 21 is a correct answer
4 Correct 0 ms 380 KB n = 3, 4 is a correct answer
5 Incorrect 1 ms 340 KB n = 2, incorrect answer: jury 62 vs contestant 72
6 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB n = 4, 80 is a correct answer
2 Correct 1 ms 380 KB n = 9, 110 is a correct answer
3 Correct 1 ms 340 KB n = 4, 21 is a correct answer
4 Correct 0 ms 380 KB n = 3, 4 is a correct answer
5 Incorrect 1 ms 340 KB n = 2, incorrect answer: jury 62 vs contestant 72
6 Halted 0 ms 0 KB -

Subtask #6
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB n = 4, 80 is a correct answer
2 Correct 1 ms 380 KB n = 9, 110 is a correct answer
3 Correct 1 ms 340 KB n = 4, 21 is a correct answer
4 Correct 0 ms 380 KB n = 3, 4 is a correct answer
5 Incorrect 1 ms 340 KB n = 2, incorrect answer: jury 62 vs contestant 72
6 Halted 0 ms 0 KB -

Subtask #7
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB n = 4, 80 is a correct answer
2 Correct 1 ms 380 KB n = 9, 110 is a correct answer
3 Correct 1 ms 340 KB n = 4, 21 is a correct answer
4 Correct 0 ms 380 KB n = 3, 4 is a correct answer
5 Incorrect 1 ms 340 KB n = 2, incorrect answer: jury 62 vs contestant 72
6 Halted 0 ms 0 KB -

Subtask #8
0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB n = 4, 80 is a correct answer
2 Correct 1 ms 380 KB n = 9, 110 is a correct answer
3 Correct 1 ms 340 KB n = 4, 21 is a correct answer
4 Correct 0 ms 380 KB n = 3, 4 is a correct answer
5 Incorrect 1 ms 340 KB n = 2, incorrect answer: jury 62 vs contestant 72
6 Halted 0 ms 0 KB -