제출 #1105908

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1105908		KasymK	Kpart (eJOI21_kpart)	C++17	30 / 100	2031 ms	1348 KiB

Main

#include "bits/stdc++.h"
using namespace std;
#define ff first
#define ss second
#define all(v) v.begin(), v.end()
#define ll long long
#define pb push_back
#define pii pair<int, int>
#define pli pair<ll, int>
#define pll pair<ll, ll>
#define tr(i, c) for(auto i = c.begin(); i != c.end(); ++i)
#define wr puts("----------------")
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}

void solve(int green_flecks){
    int n;
    scanf("%d", &n);
    vector<int> v(n+1), par(n+1, 0);
    vector<bool> ok(n+1, true);
    for(int i = 1; i <= n; ++i){
        int x;
        scanf("%d", &x);
        v[i] = x, par[i] = par[i-1]+x;
    }
    vector<int> dp(par[n]+1, 0);
    for(int i = 1; i <= n; i++){
        vector<int> ndp = dp;
        for(int j = v[i]; j <= par[n]; ++j)
            umax(ndp[j], dp[j-v[i]]);
        ndp[v[i]] = i;
        dp = ndp;
        for(int j = i-1; j >= 1; j--){
            int sm = par[i]-par[j-1], k = i-j+1;
            if(sm&1 or dp[sm/2]<j)
                ok[k] = 0;
        }
    }
    vector<int> A;
    for(int i = 2; i <= n; ++i)
        if(ok[i])
            A.pb(i);
    printf("%d", (int)A.size());
    tr(it, A)
        printf(" %d", *it);
    puts("");
}
 
int main(){
    int tt;
    scanf("%d", &tt);
    while(tt--)
        solve(tt);
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'void solve(int)':
Main.cpp:18:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
Main.cpp:23:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |         scanf("%d", &x);
      |         ~~~~~^~~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:51:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |     scanf("%d", &tt);
      |     ~~~~~^~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 0 / 70