oj.uz

Submission #1029228

# Submission time Handle Problem Language Result Execution time Memory
1029228 2024-07-20T14:03:38 Z c2zi6 Shortcut (IOI16_shortcut) C++14
0 / 100
 1 ms 348 KB 
#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
#define all(a) (a).begin(), (a).end()
#define replr(i, a, b) for (int i = int(a); i <= int(b); ++i)
#define reprl(i, a, b) for (int i = int(a); i >= int(b); --i)
#define rep(i, n) for (int i = 0; i < int(n); ++i)
#define mkp(a, b) make_pair(a, b)
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef vector<int> VI;
typedef vector<PII> VPI;
typedef vector<VI> VVI;
typedef vector<VVI> VVVI;
typedef vector<VPI> VVPI;
typedef pair<ll, ll> PLL;
typedef vector<ll> VL;
typedef vector<PLL> VPL;
typedef vector<VL> VVL;
typedef vector<VVL> VVVL;
typedef vector<VPL> VVPL;
template<class T> T setmax(T& a, T b) {if (a < b) return a = b; return a;}
template<class T> T setmin(T& a, T b) {if (a < b) return a; return a = b;}
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
template<class T>
using indset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#include "shortcut.h"

int n;
ll dist[100];
int vis[100];
VPI gp[100];
int D[100];

ll maxdistance(int s) {
    priority_queue<PLL> pq;
    rep(i, n) {
        dist[i] = 1e18;
        vis[i] = false;
    }
    pq.push({0, s});
    dist[s] = 0;
    while (pq.size()) {
        int u = pq.top().ss;
        pq.pop();
        if (vis[u]) continue;
        vis[u] = true;
        for (auto[v, w] : gp[u]) {
            if (dist[u] + w < dist[v]) {
                dist[v] = dist[u] + w;
                pq.push({-dist[v], v});
            }
        }
    }
    ll ret = 0;
    rep(i, n) setmax(ret, dist[i] + D[i]);
    return ret + D[s];
}

ll diameter() {
    ll ret = 0;
    rep(u, n) setmax(ret, maxdistance(u));
    return ret;
}

ll find_shortcut(int N, VI l, VI d, int c) {
    n = N;
    rep(u, n-1) {
        gp[u].pb({u+1, l[u]});
        gp[u+1].pb({u, l[u]});
    }
    rep(u, n) D[u] = d[u];
    ll ans = 1e18;
    replr(l, 0, n-1) replr(r, l, n-1) {
        gp[l].pb({r, c});
        gp[r].pb({l, c});
        setmin(ans, diameter());
        gp[l].pop_back();
        gp[r].pop_back();
    }
    return ans;
}

Compilation message

shortcut.cpp: In function 'll maxdistance(int)':
shortcut.cpp:53:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   53 |         for (auto[v, w] : gp[u]) {
      |                  ^

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB n = 4, 80 is a correct answer
2 Correct 1 ms 348 KB n = 9, 110 is a correct answer
3 Correct 0 ms 348 KB n = 4, 21 is a correct answer
4 Correct 0 ms 348 KB n = 3, 4 is a correct answer
5 Incorrect 0 ms 348 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 0 ms 344 KB n = 4, 80 is a correct answer
2 Correct 1 ms 348 KB n = 9, 110 is a correct answer
3 Correct 0 ms 348 KB n = 4, 21 is a correct answer
4 Correct 0 ms 348 KB n = 3, 4 is a correct answer
5 Incorrect 0 ms 348 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 0 ms 344 KB n = 4, 80 is a correct answer
2 Correct 1 ms 348 KB n = 9, 110 is a correct answer
3 Correct 0 ms 348 KB n = 4, 21 is a correct answer
4 Correct 0 ms 348 KB n = 3, 4 is a correct answer
5 Incorrect 0 ms 348 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 0 ms 344 KB n = 4, 80 is a correct answer
2 Correct 1 ms 348 KB n = 9, 110 is a correct answer
3 Correct 0 ms 348 KB n = 4, 21 is a correct answer
4 Correct 0 ms 348 KB n = 3, 4 is a correct answer
5 Incorrect 0 ms 348 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 0 ms 344 KB n = 4, 80 is a correct answer
2 Correct 1 ms 348 KB n = 9, 110 is a correct answer
3 Correct 0 ms 348 KB n = 4, 21 is a correct answer
4 Correct 0 ms 348 KB n = 3, 4 is a correct answer
5 Incorrect 0 ms 348 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 0 ms 344 KB n = 4, 80 is a correct answer
2 Correct 1 ms 348 KB n = 9, 110 is a correct answer
3 Correct 0 ms 348 KB n = 4, 21 is a correct answer
4 Correct 0 ms 348 KB n = 3, 4 is a correct answer
5 Incorrect 0 ms 348 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 0 ms 344 KB n = 4, 80 is a correct answer
2 Correct 1 ms 348 KB n = 9, 110 is a correct answer
3 Correct 0 ms 348 KB n = 4, 21 is a correct answer
4 Correct 0 ms 348 KB n = 3, 4 is a correct answer
5 Incorrect 0 ms 348 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 0 ms 344 KB n = 4, 80 is a correct answer
2 Correct 1 ms 348 KB n = 9, 110 is a correct answer
3 Correct 0 ms 348 KB n = 4, 21 is a correct answer
4 Correct 0 ms 348 KB n = 3, 4 is a correct answer
5 Incorrect 0 ms 348 KB n = 2, incorrect answer: jury 62 vs contestant 72
6 Halted 0 ms 0 KB -