Submission #854420

#	Time	Username	Problem	Language	Result	Execution time	Memory
854420		fanwen	Treatment Project (JOI20_treatment)	C++17	0 / 100	3037 ms	5972 KiB

treatment

#include <bits/stdc++.h>

using namespace std;

#define MASK(x) (1LL << (x))
#define BIT(x, i) (((x) >> (i)) & 1)
#define ALL(x) (x).begin(), (x).end()
#define REP(i, n) for (int i = 0, _n = n; i < _n; ++i)
#define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; ++i)
#define FORD(i, a, b) for (int i = (a), _b = (b); i >= _b; --i)
#define FORE(i, a, b) for (int i = (a), _b = (b); i < _b; ++i)
#define debug(...) "[" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "
#define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }

template <class A, class B> bool minimize(A &a, B b)  { if (a > b) { a = b; return true; } return false; }
template <class A, class B> bool maximize(A &a, B b)  { if (a < b) { a = b; return true; } return false; }

const int MAXN = 1e5 + 5;

int N, M;
long long dp[MAXN];

void you_make_it(void) {
    cin >> N >> M;
    vector <array <int, 4>> a(M);
    for (auto &[t, l, r, c] : a) {
    	cin >> t >> l >> r >> c;
    }
    sort(ALL(a), [&] (const array <int, 4> &A, const array <int, 4> &B){
    	return (A[1] < B[1] || (A[1] == B[1] && A[2] < B[2]));
    });
    memset(dp, 0x3f, sizeof dp);
    REP(i, M) if(a[i][1] == 1) dp[i] = a[i][3];
    REP(i, M) FORE(j, i + 1, M) {
    	if(abs(a[i][0] - a[j][0]) <= abs(a[i][2] - a[j][1]) && a[i][2] >= a[j][1] - 1) {
    		minimize(dp[j], dp[i] + a[j][3]);
    	}
    }
    long long ans = 1E18;
    REP(i, M) if(a[i][2] == N) minimize(ans, dp[i]);
    // REP(i, M) cout << dp[i] << " \n"[i + 1 == M];
    cout << (ans >= 1E18 ? -1 : ans);
}


signed main() {

#ifdef LOCAL
    freopen("TASK.inp", "r", stdin);
    freopen("TASK.out", "w", stdout);
#endif
    auto start_time = chrono::steady_clock::now();

    cin.tie(0), cout.tie(0) -> sync_with_stdio(0);

    you_make_it();

    auto end_time = chrono::steady_clock::now();

    cerr << "\nExecution time : " << chrono::duration_cast <chrono::milliseconds> (end_time - start_time).count() << "[ms]" << endl;

    return (0 ^ 0);
}

// Dream it. Wish it. Do it.

• Subtask 1: 0 / 4
• Subtask 2: 0 / 5
• Subtask 3: 0 / 30
• Subtask 4: 0 / 61