제출 #1128751

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1128751		raisel	Simple game (IZhO17_game)	C++20	0 / 100	2 ms	320 KiB

game

#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC target("avx2")
#define forn for(int i=1;i<=n;i++)
#define Yes cout<<"YES\n"
#define No cout<<"NO\n"
#define YES cout<<"YES\n"
#define NO cout<<"NO\n"
#define pb push_back
#define sp setprecision
#define int long long
#define ll long long
#define nn '\n'
using namespace std;
const int N=1e6+26;
const int MOD=1e9+7;    
int a[N];
int n,m;
void al(){
  cin>>n>>m;
  for(int i=1;i<=n;i++){
    cin>>a[i];
  }
  while(m--){
    int type;
    cin>>type;
    if(type==1){
      int x,y;
      cin>>x>>y;
      a[x]=y;
    }
    else {
      int x;
      cin>>x;
      int cnt=0;
      for(int i=1;i<n;i++){
        if((a[i]<=x && a[i+1]>=x) || (a[i]>=x && a[i+1]<=x)) cnt++;
        
      }
      cout<<cnt<<'\n';
    }
  }
}

signed main(){
  freopen("game.in","r",stdin);
    freopen("game.out","w",stdout);
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);  
  int t=1;
//  cin>>t;  
  while(t--) {
    al();
    }  
    }

컴파일 시 표준 에러 (stderr) 메시지

game.cpp: In function 'int main()':
game.cpp:46:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |   freopen("game.in","r",stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
game.cpp:47:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |     freopen("game.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 22
• Subtask 2: 0 / 27
• Subtask 3: 0 / 51