Submission #1090019

#	Time	Username	Problem	Language	Result	Execution time	Memory
1090019		phong	Treatment Project (JOI20_treatment)	C++17	35 / 100	103 ms	956 KiB

treatment

#include<bits/stdc++.h>
#define ll long long
#define int long long
const int nmax = 5e3 + 5, M = 3e6 + 5;
const ll oo = 1e18 + 5, base = 311;
const int lg = 62, tx = 26;
const ll mod = 1e9 + 7, mod2 = 1e9+3;
#define pii pair<ll, ll>
#define fi first
#define se second
#define endl "\n"
#define debug(a, n) for(int i = 1; i <= n; ++i) cout << a[i] << ' '; cout << "\n";
#define NAME code
using namespace std;

int n, m;
struct node{
    int t, l, r, c;
}a[nmax];
ll dp[nmax];
main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
//    freopen("code.inp", "r", stdin);
//    freopen("code.out", "w", stdout);
    cin >> n >> m;
    for(int i = 1; i <= m; ++i) cin >> a[i].t >> a[i].l >> a[i].r >> a[i].c;
    for(int i = 1; i <= m; ++i) dp[i] = oo;
    priority_queue<pii, vector<pii>, greater<pii>> q;
    for(int i = 1; i <= m; ++i){
        if(a[i].l == 1){

            dp[i] = a[i].c;
            q.push({dp[i], i});
        }
    }
    while(q.size()){
        pii tmp = q.top();q.pop();
        int u = tmp.se;
        for(int i = 1; i <= m; ++i){
            if(a[u].r - a[i].l + 1 >= abs(a[u].t - a[i].t)){
                if(dp[i] > dp[u] + a[i].c){
                    dp[i] = dp[u] + a[i].c;
                    q.push({dp[i], i});
                }
            }
        }
    }
    ll ans = oo;
    for(int i = 1; i <= m; ++i) if(a[i].r == n) ans = min(ans, dp[i]);
    if(ans == oo) cout << -1;
    else cout << ans;
}
/*
10 5
1 1 3 1
1 1 6 5
1 4 8 3
1 5 10 4
1 6 10 3
*/

Compilation message (stderr)

treatment.cpp:21:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   21 | main(){
      | ^~~~

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