oj.uz

Submission #237216

# Submission time Handle Problem Language Result Execution time Memory
237216 2020-06-05T09:27:28 Z kartel Krov (COCI17_krov) C++14
0 / 140
 5 ms 640 KB 
#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define in(x) freopen(x, "r", stdin)
#define out(x) freopen(x, "w", stdout)
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("-O3")
#define F first
#define S second
#define pb push_back
#define N +105
#define MaxS N * N
#define M ll(1e9 + 7)
#define sz(x) (int)x.size()
//#define re return
#define oo ll(1e18)
#define el '\n'
#define pii pair <int, int>
using namespace std;
//using namespace __gnu_pbds;
//typedef tree <int, null_type, less_equal <int> , rb_tree_tag, tree_order_statistics_node_update> ordered_set;
typedef long long ll;
typedef long double ld;

int f[N][N * N / 100];
int i, j, n, m, u, v, t, c;
vector <pair <int, pair <int, int> > > g[N];
bool mrk[N];

void dfs(int v)
{
    if (mrk[v]) return;
    mrk[v] = 1;

    for (auto re : g[v])
    {
        int u = re.F;
        int t = re.S.F;
        int c = re.S.S;
        if (mrk[u]) continue;
        bool F = 0;

        for (j = 0; j < N * N; j++)
          if (j + t < N * N && f[u][j + t] > f[v][j] + c)
            {
                F = 1;
                f[u][t + j] = f[v][j] + c;
            }

        if (F) dfs(u);
    }
    mrk[v] = 0;
}

int main()
{
    srand(time(0));
    ios_base::sync_with_stdio(0);
    iostream::sync_with_stdio(0);
    ios::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);

//    in("input.txt");
//    out("output.txt");

    cin >> n >> m;
    for (i = 1; i <= m; i++)
    {
        cin >> u >> v >> t >> c;
        g[v].pb({u, {t, c}});
        g[u].pb({v, {t, c}});
    }

    for (i = 1; i <= n; i++)
      for (j = 0; j < N * N; j++) f[i][j] = 1e9;

    f[1][0] = 0;
    dfs(1);

    for (i = 2; i <= n; i++)
    {
        ll mn = 1e18;
        for (j = 1; j < N * N; j++)
            if (f[i][j] * 1ll * j < mn)
        {
            mn = f[i][j] * 1ll * j;
        }

        if (mn == 1e18) cout << "-1" << el;
        else cout << mn << el;
    }

}

//  x ^ 2 + y ^ 2 = 1
//  x * a_i + y * b_i
//  a_i = -b_i * tan(alpha)
//  a_i / -b_i = tan(alpha)
//  alpha = atan(a_i / (-b_i))

Compilation message

krov.cpp: In function 'int main()':
krov.cpp:86:23: warning: iteration 109 invokes undefined behavior [-Waggressive-loop-optimizations]
             if (f[i][j] * 1ll * j < mn)
                 ~~~~~~^
krov.cpp:85:23: note: within this loop
         for (j = 1; j < N * N; j++)
                       ^
krov.cpp:77:43: warning: iteration 110 invokes undefined behavior [-Waggressive-loop-optimizations]
       for (j = 0; j < N * N; j++) f[i][j] = 1e9;
                                   ~~~~~~~~^~~~~
krov.cpp:77:21: note: within this loop
       for (j = 0; j < N * N; j++) f[i][j] = 1e9;
                     ^

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 5 ms 640 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 5 ms 512 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 5 ms 640 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 5 ms 512 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #5
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 5 ms 640 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #6
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 5 ms 512 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 5 ms 512 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #8
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 5 ms 512 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #9
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 5 ms 512 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #10
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 5 ms 512 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -