제출 #778883

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
778883		vjudge1	Stove (JOI18_stove)	C++17	0 / 100	1 ms	340 KiB

stove

//#pragma GCC optimize("O3,unroll-loops")
//#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include<bits/stdc++.h>
#define ll long long
#define F first
#define S second
#define pb push_back
#define pf push_front
#define ppb pop_back
#define ppf pop_front
#define all(x) x.begin(), x.end()
#define len(x) x.size()
#define forik(x) ll i = 1; i <= x; i++

const int mod = 1e9 + 7;

using namespace std;

ll n, k, p[200001], ans;
vector <ll> v;

ll gcd (ll a, ll b){
	while (a > 0 && b > 0){
		if (a >= b){
			a %= b;
		}
		else{
			b %= a;
		}
	}
	return a + b;
}

ll binpow(ll a, ll b){
	a %= mod;
	if(b == 0){
		return 1;
	}
	if(b % 2 == 1){
		return binpow (a, b - 1) % mod * a;
	}
	if(b % 2 == 0){
		ll t = binpow (a, b / 2) % mod;
		return t * t % mod;
	}
}

signed main (){
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
cin >> n >> k;
for (int i = 1; i <= n; i++){
	cin >> p[i];
}
for (int i = 1; i < n; i++){
	if (i == 1){
		v.pb(p[i + 1] - p[i] + 1);
	}
	else {
		v.pb (p[i + 1] - p[i]);
	}
}
k--;
if (n - 1 <= k){
	cout << n;
	return 0;
}
sort (all(v));
for (int i = len(v) - 1; i >= v.size() - k; i--){
	v[i] = 1;
}
for (int i = 0; i < len(v); i++){
	ans += v[i];
}
cout << ans;
}

컴파일 시 표준 에러 (stderr) 메시지

stove.cpp: In function 'int main()':
stove.cpp:69:28: warning: comparison of integer expressions of different signedness: 'int' and 'long long unsigned int' [-Wsign-compare]
   69 | for (int i = len(v) - 1; i >= v.size() - k; i--){
      |                          ~~^~~~~~~~~~~~~~~
stove.cpp:72:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 | for (int i = 0; i < len(v); i++){
      |                   ^
stove.cpp: In function 'long long int binpow(long long int, long long int)':
stove.cpp:46:1: warning: control reaches end of non-void function [-Wreturn-type]
   46 | }
      | ^

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 50