Codeforces Round #806 (Div. 4) - A

문제 출처:

https://codeforces.com/contest/1703/problem/A

 

문제 분석:

yes Yes 등 yes가 들어오면 YES

아니면 NO를 출력하는 문제

 

문제 해결:

모든 수를 uppercase로 바꿔주고 체크

 

내 소스코드:

// freopen("input.txt", "r", stdin);
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <stdio.h>
#include <string>
#include <cmath>
#include <algorithm>
#include <vector>
#include <utility>
#include <string>
#include <queue>
#include <stack>
#include <cstring>
#include <list>
#include <set>
#include <string.h>
#include <map>
#include <limits.h>
#include <stdlib.h>
#include <typeinfo>
#include <bitset>

#define rep(i, n) for (int i = 0; i < (int)(n); ++i)
#define rep1(i, n) for (int i = 1; i <= (int)(n); ++i)
#define range(x) begin(x), end(x)
#define sz(x) (int)(x).size()
#define pb push_back
#define F first
#define S second

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pii;
typedef vector<int> vi;

const int INF = 987654321;

int testcase;


int main() 
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);

    cin >> testcase;

    while (testcase--)
    {
        string tmp;
        cin >> tmp;
        string k = "";
        for (int i = 0; i < 3; i++)
        {
            k+=toupper(tmp[i]);
        }
        if (k == "YES")
            cout << "YES\n";
        else
            cout << "NO\n";
    }


    return 0;
}

 

고찰 :