Submission #1128920

#	Time	Username	Problem	Language	Result	Execution time	Memory
1128920		pcheloveks	Toll (BOI17_toll)	C++17	0 / 100	31 ms	4160 KiB

toll

#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("avx,avx2,tune=native")
#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <fstream>
#include <algorithm>
#include <cstring> // Для memset

#define endl '\n'
using namespace std;

typedef long long LL;
typedef pair<LL, LL> pii;

const LL DIM = 50007;
const LL INF = 999999999999;

LL n, k, o, m;

class edge {
public:
    LL to, w;
};

vector < edge > v[DIM];

class tran {
public:
    LL mat[5][5];
    void init() {
        for (int i = 0; i < k; i++) {
            for (int j = 0; j < k; j++) {
                mat[i][j] = INF;
            }
        }
    }
};

tran solve(LL L, LL R) {
    tran ans;
    ans.init();
    if (R - L == 1) {
        for (int i = 0; i < k; i++) {
            LL val = L * k + i;
            for (auto to : v[val]) {
                ans.mat[i][to.to - (R * k)] = to.w;
            }
        }
        return ans;
    }

    LL mid = (L + R) / 2;

    tran m1 = solve(L, mid);
    tran m2 = solve(mid, R);

    for (int l = 0; l < k; l++) {
        for (int r = 0; r < k; r++) {
            for (int m = 0; m < k; m++) {
                ans.mat[l][r] = min(ans.mat[l][r], m1.mat[l][m] + m2.mat[m][r]);
            }
        }
    }

    return ans;
}

LL a, b, res, b1, b2;

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin >> k >> n >> m >> o;
    for (int i = 1; i <= m; i++) {
        LL a, b, t;
        scanf("%d" "%d" "%d", &a, &b, &t);
        v[a].push_back({ b, t });
    }

    vector < LL > out;

    for (int i = 1; i <= o; i++) {
        LL a, b, t;
        scanf("%d" "%d", &a, &b);

        b1 = a / k;
        b2 = b / k;
        if (b1 >= b2 || m == 0) out.push_back(-1);
        else {
            res = solve(b1, b2).mat[a - b1 * k][b - b2 * k];
            if (res >= INF) out.push_back(-1);
            else out.push_back(res);
        }
    }
    for (auto x : out) cout << x << endl;
    return 0;
}

Compilation message (stderr)

toll.cpp: In function 'int main()':
toll.cpp:82:17: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'LL*' {aka 'long long int*'} [-Wformat=]
   82 |         scanf("%d" "%d" "%d", &a, &b, &t);
      |                ~^             ~~
      |                 |             |
      |                 int*          LL* {aka long long int*}
      |                %lld
toll.cpp:82:22: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'LL*' {aka 'long long int*'} [-Wformat=]
   82 |         scanf("%d" "%d" "%d", &a, &b, &t);
      |                     ~^            ~~
      |                      |            |
      |                      int*         LL* {aka long long int*}
      |                     %lld
toll.cpp:82:27: warning: format '%d' expects argument of type 'int*', but argument 4 has type 'LL*' {aka 'long long int*'} [-Wformat=]
   82 |         scanf("%d" "%d" "%d", &a, &b, &t);
      |                          ~^           ~~
      |                           |           |
      |                           int*        LL* {aka long long int*}
      |                          %lld
toll.cpp:90:17: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'LL*' {aka 'long long int*'} [-Wformat=]
   90 |         scanf("%d" "%d", &a, &b);
      |                ~^        ~~
      |                 |        |
      |                 int*     LL* {aka long long int*}
      |                %lld
toll.cpp:90:22: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'LL*' {aka 'long long int*'} [-Wformat=]
   90 |         scanf("%d" "%d", &a, &b);
      |                     ~^       ~~
      |                      |       |
      |                      int*    LL* {aka long long int*}
      |                     %lld
toll.cpp:82:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   82 |         scanf("%d" "%d" "%d", &a, &b, &t);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
toll.cpp:90:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   90 |         scanf("%d" "%d", &a, &b);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 7
• Subtask 2: 0 / 10
• Subtask 3: 0 / 8
• Subtask 4: 0 / 31
• Subtask 5: 0 / 44