Submission #1160639

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1160639	2025-03-02 17:23:38	guagua0407	Arranging Tickets (JOI17_arranging_tickets)	C++20	0 / 100	0 ms	328 KiB

arranging_tickets

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//#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define f first
#define s second
#define all(x) x.begin(),x.end()
#define _ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
int dx[4]={0,0,1,-1};
int dy[4]={1,-1,0,0};
void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}
int main() {_
    int n,m;
    cin>>n>>m;
    vector<ll> l(m),r(m),c(m);
    vector<vector<int>> id(n+1);
    vector<ll> pre(n+2);
    for(int i=0;i<m;i++){
        cin>>l[i]>>r[i]>>c[i];
        if(l[i]>r[i]) swap(l[i],r[i]);
        id[l[i]].push_back(i);
        pre[l[i]]+=c[i];
        pre[r[i]]-=c[i];
 
 
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Compilation message (stderr)

arranging_tickets.cpp: In function 'void setIO(std::string)':
arranging_tickets.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arranging_tickets.cpp:16:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 35
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 15