제출 #344544

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
344544		Nurlykhan	Bigger segments (IZhO19_segments)	C++17	0 / 100	1 ms	364 KiB

segments

#include <bits/stdc++.h>

#define ll long long

using namespace std;

const int N = (int)5e5 + 10;
const int mod = (int)1e9 + 7;

int n;
int a[N];
ll pref[N];

ll get_sum(int l, int r) {
    return pref[r] - pref[l - 1];
}

int get(int it) {
    ll sum = 0;
    for (int i = 0; i <= it; i++) {
        sum += a[i];
    }
    int cnt = 0;
    //cout << "(" << 0 << ", "<< it << ") " << sum << "\n";
    it++;
    while (it < n) {
        ll cur_sum = 0;
   //     cout << "(" << it << ", ";
        while (it < n && cur_sum < sum) {
            cur_sum += a[it];
            it++;
        }
   //     cout << it - 1 << ") " << cur_sum << "\n";
        if (cur_sum >= sum) {
            cnt++;
        }
        sum = cur_sum;
    }
    return cnt + 1;
}

int main() {
    scanf("%d", &n);
    for (int i = 0; i < n; i++) {
        scanf("%d", &a[i]);
        pref[i] = pref[i - 1] + a[i];
    }
    //8 2 8 7 2 8 2 8 5 2

    int ans = 0;
    ans = 0;
    for (int i = 0; i < n; i++) {
        ans = max(ans, get(i));
    }
    printf("%d", ans);
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

segments.cpp: In function 'int main()':
segments.cpp:43:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   43 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
segments.cpp:45:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   45 |         scanf("%d", &a[i]);
      |         ~~~~~^~~~~~~~~~~~~

• Subtask 1: 0 / 13
• Subtask 2: 0 / 14
• Subtask 3: 0 / 10
• Subtask 4: 0 / 36
• Subtask 5: 0 / 27