Submission #882534

#	Time	Username	Problem	Language	Result	Execution time	Memory
882534		viwlesxq	Tents (JOI18_tents)	C++17	0 / 100	0 ms	500 KiB

tents

//     ↘ ⬇ ⬇ ⬇ ⬇ ⬇ ↙
//     ➡  IOI, IZhO ⬅
//     ↗ ⬆ ⬆ ⬆ ⬆ ⬆ ↖
//⠀⠀⢠⣤⡄⢠⣤⣤⣤⣤⣤⣤⡄⢠⣤⡄⠀⠀⠀⠀⠀⠀⠀⠀
//⠀⠀⢸⣿⡇⢸⣿⣿⣿⣿⣿⣿⡇⢸⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀
//⠀⠀⢸⣿⡇⢸⣿⣿⣿⣿⣿⣿⡇⢸⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀
//⠀⠀⢸⣿⡇⢸⣿⣿⣿⣿⣿⣿⡇⢸⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀
//⠀⠀⢸⣿⡇⢸⣿⣿⣿⣿⣿⣿⡇⢸⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀
//⠀⠀⢸⣿⡇⢸⣿⣿⣿⣿⣿⣿⡇⢸⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀
//⠀⠀⠀⠙⠃⠘⠛⠛⠛⠛⠛⠛⠃⠘⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀
//⠀⠀⠀  ⠘⠛⠛⠛⠛⠛⠛⠛⠛⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
//⠀⠀⠀⠀⠀⣠⣶⣶⠂⣰⣶⣶⣄⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
//⠀⠀⠀⢀⣾⣿⣿⡏⢠⣿⣿⣿⣿⣿⣆⠀⠀⠀⠀⠀⠀⠀⠀⠀
//⠀⠀⠀⡈⠻⣿⣿⣶⣾⣿⣿⣿⣿⠿⠋⡀⠀⠀⠀⠀⠀⠀⠀⠀
//⠀⠀⠀⣿⣶⣄⠙⣿⣿⣿⣿⣟⢁⣴⣾⡇⠀⠀⠀⠀⠀⠀⠀⠀
//⠀⠀⠀⢹⣿⡏⢠⣿⠟⠛⢿⣿⣿⣿⡿⠁⠀⠀⠀⠀⠀⠀⠀⠀
//⠀⠀⠀⠀⠙⠀⠀⣠⣶⣷⣤⡈⠛⠛⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀
//⠀⠀⠀⠀⠀⠀⠈⠉⠛⠛⠋⠉⠀⠀


#include <bits/stdc++.h>

using namespace std;

#define int long long
#define all(x) x.begin(), x.end()
#define size(x) (int)x.size()
#define pb push_back
#define eb emplace_back

template<typename S>
bool chmin(S &a, const S b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}
template<typename S>
bool chmax(S &a, const S b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

const int mod = 1e9 + 7;
const int inf = 1e9 + 7;
const int INF = 1e18 + 7;
const double eps = 1e-6;
const double EPS = 1e-9;

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, m;
    cin >> n >> m;
    int dp[m];
    dp[0] = 4;
    for (int i = 1; i < m; ++i) {
        dp[i] = 4 + i + dp[i - 1];
        dp[i] %= mod;
    }
    cout << dp[m - 1];
}

• Subtask 1: 0 / 48
• Subtask 2: 0 / 52