제출 #1026487

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1026487		vjudge1	Bliskost (COI23_bliskost)	C++17	0 / 100	0 ms	348 KiB

Main

#include <bits/stdc++.h>
using namespace std;

#define int long long

void f(){
	#ifndef ONLINE_JUDGE
	freopen("in.txt", "r", stdin);
	freopen("out.txt", "w", stdout);
	#endif
}


signed main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);

	//f();

	int n, q; cin >>n >> q;

	vector<int> a(n);
	int sb=0, sa=0;
	string s, t; cin >> s>> t;
	int last=0;
	for(int i=0; i<n; i++){

		if(i%2)
		 sa+=s[i]-t[i];
		else sb+=s[i]-t[i];
	}

	if(sa==sb) cout<<"da\n";
	else cout<<"ne\n";

	while(q--){
		int p; cin >> p; p--;
		char x; cin >> x;
		
		if(p%2){
			sa-=s[p]-t[p];
			s[p]=x;
			sa+=s[p]-t[p];
		}
		else{
			sb-=s[p]-t[p];
			s[p]=x;
			sb+=s[p]-t[p];		
		}

		if(sa==sb) cout<<"da\n";
		else cout<<"ne\n";
	}

}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:25:6: warning: unused variable 'last' [-Wunused-variable]
   25 |  int last=0;
      |      ^~~~
Main.cpp: In function 'void f()':
Main.cpp:8:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |  freopen("in.txt", "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
Main.cpp:9:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |  freopen("out.txt", "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

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