Submission #1348022

#	Time	Username	Problem	Language	Result	Execution time	Memory
1348022		msb.83	A String Problem (EGOI25_stringproblem)	C++20	0 / 100	1 ms	344 KiB

Main

//Rahman ve Rahim olan Allah'ın adıyla
#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
#define int long long
#define pb push_back
#define fi first
#define se second
#define mid (st+end)/2
using namespace std;
int32_t main(){
    ios_base::sync_with_stdio(false);cin.tie(0);
    freopen("input.txt","r",stdin);freopen("output.txt","w",stdout);
    int n;cin>>n;vector<array<int,2>>arr(n);vector<int>res(n*2,0);vector<array<int,2>>ans;vector<bool>vis(2*n,false);
    for(int i=0;i<n;i++){
        cin>>arr[i][0]>>arr[i][1];res[(arr[i][0]+arr[i][1])%(2*n)]++;
    }int mx=0,mxi=0;for(int i=1;i<n*2;i+=2){
        if(res[i]>mx){mx=res[i];mxi=i;}
    }cout<<n-mx<<"\n";
    for(int i=0;i<n;i++){
        if((arr[i][0]+arr[i][1])%(n*2)==mxi) continue;
        if(vis[(mxi-arr[i][0]+(n*2))%(n*2)]){swap(arr[i][0],arr[i][1]);}
        cout<<i<<" "<<arr[i][1]<<" "<<(mxi-arr[i][0]+(n*2))%(n*2)<<"\n";
        vis[arr[i][0]]=true;
    }
}

Compilation message (stderr)

Main.cpp: In function 'int32_t main()':
Main.cpp:12:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     freopen("input.txt","r",stdin);freopen("output.txt","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:12:43: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     freopen("input.txt","r",stdin);freopen("output.txt","w",stdout);
      |                                    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 0: 0 / 0
• Subtask 1: 0 / 14
• Subtask 2: 0 / 16
• Subtask 3: 0 / 12
• Subtask 4: 0 / 28
• Subtask 5: 0 / 30