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답안 #239745

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
239745 2020-06-17T08:37:09 Z VEGAnn Go (COCI18_go) C++14
60 / 100
 49 ms 47872 KB 
#include <bits/stdc++.h>
#define PB push_back
#define sz(x) ((int)x.size())
#define i3 array<int,3>
using namespace std;
typedef long double ld;
typedef long long ll;
const int N = 200100;
const int M = 110;
const int K = 110;
const int T = 2010;
const int oo = 2e9;
i3 a[M];
short f[T][M][M], ans = 0, n, k, m;

void upd(short &x, short y){
    x = max(x, y);
}

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

#ifdef _LOCAL
    freopen("in.txt","r",stdin);
#endif // _LOCAL

    cin >> n >> k >> m;

    for (int i = 0; i < m; i++)
        cin >> a[i][0] >> a[i][1] >> a[i][2];

    a[m++] = {k, 0, 1};

    sort(a, a + m);

    for (int tim = 1; tim < T; tim++)
    for (int l = 0; l < m; l++)
    for (int r = l; r < m; r++)
        f[tim][l][r] = -1;

    for (int i = 0; i < m; i++)
        if (a[i][0] == k && a[i][1] == 0)
            f[1][i][i] = 0;

    for (int tim = 1; tim < T; tim++){
        for (int l = 0; l < m; l++)
        for (int r = l; r < m; r++){
            if (f[tim][l][r] < 0) continue;

            ans = max(ans, f[tim][l][r]);

            if (l > 0){
                int nw = tim + a[l][0] - a[l - 1][0];

                if (nw < T)
                    upd(f[nw][l - 1][r], f[tim][l][r] + (nw <= a[l - 1][2] ? a[l - 1][1] : 0));
            }

            if (r < m - 1){
                int nw = tim + a[r + 1][0] - a[r][0];

                if (nw < T)
                    upd(f[nw][l][r + 1], f[tim][l][r] + (nw <= a[r + 1][2] ? a[r + 1][1] : 0));
            }
        }
    }

    cout << ans;

    return 0;
}

Subtask #1
60.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 10240 KB Output is correct
2 Correct 11 ms 12800 KB Output is correct
3 Correct 13 ms 14592 KB Output is correct
4 Correct 17 ms 17152 KB Output is correct
5 Incorrect 25 ms 30208 KB Output isn't correct
6 Correct 30 ms 34560 KB Output is correct
7 Correct 34 ms 38912 KB Output is correct
8 Incorrect 40 ms 43384 KB Output isn't correct
9 Incorrect 45 ms 47608 KB Output isn't correct
10 Incorrect 49 ms 47872 KB Output isn't correct