제출 #521483

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
521483		Rasoul006	Usmjeri (COCI17_usmjeri)	C++17	0 / 140	87 ms	13048 KiB

usmjeri

#include <bits/stdc++.h>

#define endl "\n"

typedef long long ll;

using namespace std;

const int N = 1e6+5;
const int mod = 1e9+7;
ll n , m , is[200009] ;
pair < ll , ll > pr[300009] ;
int main()
{
    ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin >> n >> m ;
    for(int i = 0 ; i < n- 1 ; i++){
        ll a , b ;
        cin >> a >> b ;
    }
    for(int i =1 ; i <= m ; i++){
        ll a ,b ;
        cin >> pr[i].first >> pr[i].second ;
        is[pr[i].first] = 1 ;
        is[pr[i].second] = -1 ;
    }
    for(int i = 1 ; i < n  ;i++){
        is[i] += is[i-1] ;
    }
    bool iss = 0 ;
    ll ans = 1 ;
    for(int i = 1 ; i < n ; i++){
        if(is[i] == 0){
            iss = 0 ;
            ans = ((ans % mod) * (2 % mod)) % mod ;
        }
        else{
            if(iss == 0){
                ans = ((ans % mod) * (2 % mod)) % mod ;
                iss = 1  ;
            }
        }
    }
    cout << ans << endl ;
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

usmjeri.cpp: In function 'int main()':
usmjeri.cpp:22:12: warning: unused variable 'a' [-Wunused-variable]
   22 |         ll a ,b ;
      |            ^
usmjeri.cpp:22:15: warning: unused variable 'b' [-Wunused-variable]
   22 |         ll a ,b ;
      |               ^

• Subtask 1: 0 / 14
• Subtask 2: 0 / 14
• Subtask 3: 0 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 14
• Subtask 6: 0 / 14
• Subtask 7: 0 / 14
• Subtask 8: 0 / 14
• Subtask 9: 0 / 14
• Subtask 10: 0 / 14