제출 #381899

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
381899		topovik	Vepar (COCI21_vepar)	C++14	70 / 70	199 ms	43912 KiB

Main

#include <bits/stdc++.h>
#include <chrono>
#define f first
#define s second
#define pb push_back

using namespace std;

typedef long long ll;
typedef long double ld;

const int N = 1e7 + 10;

int l[N];
vector <int> pr;

ll Time()
{
    return chrono::system_clock().now().time_since_epoch().count();
}

mt19937 rnd(Time());

int sum(int x, int y)
{
    if (x < y) return 0;
    else return (x / y) + sum(x / y, y);
}

int main()
{
    for (register int i = 2; i < N; i++)
    {
        if (l[i] == 0)
        {
            l[i] = i;
            pr.pb(i);
        }
        for (register int j = 0; pr[j] <= l[i] && pr[j] * i < N; j++) l[pr[j] * i] = pr[j];
    }
    int t;
    cin >> t;
    while (t--)
    {
        int l, r, l1, r1;
        cin >> l >> r >> l1 >> r1;
        bool g = 1;
        for (int i = 0; i < pr.size(); i++) g = g && (sum(r1, pr[i]) - sum(l1 - 1, pr[i])) >= (sum(r, pr[i]) - sum(l - 1, pr[i]));
        cout << (g ? "DA" : "NE") << endl;
    }
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:48:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |         for (int i = 0; i < pr.size(); i++) g = g && (sum(r1, pr[i]) - sum(l1 - 1, pr[i])) >= (sum(r, pr[i]) - sum(l - 1, pr[i]));
      |                         ~~^~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10