제출 #1095421

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1095421		Kerim	Bigger segments (IZhO19_segments)	C++17	37 / 100	1546 ms	2516 KiB

segments

#include "bits/stdc++.h"
#define ll long long
using namespace std;
const int N = 2e5+4;
ll a[N], b[N], par[N];
int main(){
    // freopen("file.in", "r", stdin);
    int n;
    scanf("%d", &n);
    for(int i = 1; i <= n; ++i){
        int x;
        scanf("%d", &x);
        par[i] = par[i-1]+x;
    }
    a[1] = par[1];
    b[1] = 1;
    for(int i = 2; i <= n; ++i){
        int who, mx = 0;
        for(int j = i; j >= 1; --j)
            if(par[i] >= a[j-1]+par[j-1] and b[j-1]+1 > mx){
                mx = b[j-1]+1;
                who = j;
            }
        b[i] = b[who-1] + 1;
        a[i] = par[i]-par[who-1];
    }
    printf("%lld\n", b[n]);
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

segments.cpp: In function 'int main()':
segments.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
segments.cpp:12:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |         scanf("%d", &x);
      |         ~~~~~^~~~~~~~~~
segments.cpp:24:21: warning: 'who' may be used uninitialized in this function [-Wmaybe-uninitialized]
   24 |         b[i] = b[who-1] + 1;
      |                  ~~~^~

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