Submission #1285946

#	Time	Username	Problem	Language	Result	Execution time	Memory
1285946		hainam2k9	Treatment Project (JOI20_treatment)	C++20	35 / 100	3090 ms	2580 KiB

treatment

#include <bits/stdc++.h>
#define tt cin.tie(0), cout.tie(0), ios_base::sync_with_stdio(0)
#define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
#define ll long long
#define ull unsigned long long
#define i128 __int128
#define db long double
#define sz(a) ((int)(a).size())
#define pb emplace_back
#define pf emplace_front
#define pob pop_back
#define pof pop_front
#define lb lower_bound
#define ub upper_bound
#define fi first
#define se second
#define ins emplace
#define mp make_pair
using namespace std;
const int MOD = 1e9+7, MAXN = 1e5+5;
const string NAME = "";
struct Project{
    int t,l,r,cost;
}a[MAXN];
int n,m;
ll dp[MAXN],rs=1e18;
priority_queue<pair<ll,int>, vector<pair<ll,int>>, greater<pair<ll,int>>> pq;
bool check(int i, int j){
    if(a[i].t>=a[j].t) return a[i].r+1>=a[j].l+a[i].t-a[j].t;
    return a[i].r+a[i].t-a[j].t+1>=a[j].l;
}
int main()
{
    tt;
    if(fopen((NAME + ".INP").c_str(), "r")) fo;
    memset(dp,0x3f,sizeof(dp));
    cin >> n >> m;
    for(int i = 1; i<=m; ++i){
        cin >> a[i].t >> a[i].l >> a[i].r >> a[i].cost;
        if(a[i].l==1) dp[i]=a[i].cost, pq.ins(a[i].cost,i);
    }
    while(!pq.empty()){
        pair<ll,int> top=pq.top();
        pq.pop();
        if(top.fi>dp[top.se]) continue;
        if(a[top.se].r==n) rs=min(rs,top.fi);
        for(int i = 1; i<=m; ++i)
            if(check(top.se,i)&&dp[i]>top.fi+a[i].cost) dp[i]=top.fi+a[i].cost, pq.ins(dp[i],i);
    }
    cout << (rs>=1e18 ? -1 : rs);
}

Compilation message (stderr)

treatment.cpp: In function 'int main()':
treatment.cpp:3:19: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    3 | #define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
      |            ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
treatment.cpp:35:45: note: in expansion of macro 'fo'
   35 |     if(fopen((NAME + ".INP").c_str(), "r")) fo;
      |                                             ^~
treatment.cpp:3:63: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    3 | #define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
      |                                                        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
treatment.cpp:35:45: note: in expansion of macro 'fo'
   35 |     if(fopen((NAME + ".INP").c_str(), "r")) fo;
      |                                             ^~

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