Submission #392209

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
392209	2021-04-20 16:02:38	JerryLiu06	Toll (BOI17_toll)	C++11	100 / 100	323 ms	101476 KiB

toll

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#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> pii;
#define pb push_back
#define f first
#define s second
int K, N, M, O; int DP[50010][20][5][5], CUR[5][5];
void comb(int res[5][5], int A[5][5], int B[5][5]) {
    for (int i = 0; i < 5; i++) for (int j = 0; j < 5; j++) {
        for (int k = 0; k < 5; k++) res[i][j] = min(res[i][j], A[i][k] + B[k][j]);
    }
}
int main() {
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> K >> N >> M >> O; memset(DP, 0x3f, sizeof DP);
    for (int i = 0; i < M; i++) { 
        int A, B, T; cin >> A >> B >> T; DP[A / K][0][A % K][B % K] = T;
    }
    for (int j = 1; j < 20; j++) for (int i = 0; i + (1 << (j - 1)) <= N / K; i++) {
        comb(DP[i][j], DP[i][j - 1], DP[i + (1 << (j - 1))][j - 1]);
    }
 
 
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• Subtask 1: 7 / 7
• Subtask 2: 10 / 10
• Subtask 3: 8 / 8
• Subtask 4: 31 / 31
• Subtask 5: 44 / 44