Submission #522899

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
522899	2022-02-06 11:13:28	Nursik	Bootfall (IZhO17_bootfall)	C++14	100 / 100	573 ms	8124 KiB

bootfall

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#include <bits/stdc++.h>
#define pb push_back
#define ll long long
#define ld long double
#define f first
#define s second
#define mp make_pair
const ll maxn = 5e2 + 1, maxm = 3e5 + 1,  maxk = 61;
const ll inf = 1000000000, mod = inf + 7, mod2 = 998244353;
const ll pa = 31, block = 400;
using namespace std;
ll n, sum;
unsigned ll a[maxn], dp[maxm], cnt[maxm], ans[maxm];
int main(){
  //  ios_base::sync_with_stdio(false);
   // cin.tie(0), cout.tie(0);
    cin >> n;
    dp[0] = 1;
    for (int i = 1; i <= n; ++i){
        cin >> a[i];
        for(int j = maxm - 1; j >= a[i]; j--)
            dp[j] += dp[j - a[i]];
        sum += a[i];
    }
    if (sum % 2 != 0 || dp[sum / 2] == 0){
        cout << 0;
 
 
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Compilation message (stderr)

bootfall.cpp: In function 'int main()':
bootfall.cpp:25:33: warning: comparison of integer expressions of different signedness: 'int' and 'long long unsigned int' [-Wsign-compare]
   25 |         for(int j = maxm - 1; j >= a[i]; j--)
      |                               ~~^~~~~~~
bootfall.cpp:50:34: warning: comparison of integer expressions of different signedness: 'int' and 'long long unsigned int' [-Wsign-compare]
   50 |         for (int j = maxm - 1; j >= a[i]; --j){
      |                                ~~^~~~~~~
bootfall.cpp:56:20: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'long long int' [-Wsign-compare]
   56 |         if (ans[i] == n){
      |             ~~~~~~~^~~~

• Subtask 1: 6 / 6
• Subtask 2: 7 / 7
• Subtask 3: 15 / 15
• Subtask 4: 16 / 16
• Subtask 5: 21 / 21
• Subtask 6: 35 / 35