Submission #467437

#	Time	Username	Problem	Language	Result	Execution time	Memory
467437		julian33	Cigle (COI21_cigle)	C++14	48 / 100	1089 ms	10424 KiB

cigle

#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {
    cerr<<vars<<" = ";
    string delim="";
    (...,(cerr<<delim<<values,delim=", "));
    cerr<<"\n";
}
#else
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {}
#endif

#define pb push_back
#define sz(x) (int)(x.size())
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
template<typename T> inline void maxa(T& a,T b){a=max(a,b);}
template<typename T> inline void mina(T& a,T b){a=min(a,b);} 
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int mxN=5e3+5; //make sure this is right
const int mod=1e9+7;

int dp[mxN][mxN],a[mxN];

int main(){
    cin.sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    #ifdef LOCAL
        freopen("input.txt","r",stdin);
        freopen("output.txt","w",stdout);
    #endif

    int n; cin>>n;
    for(int i=1;i<=n;i++)
        cin>>a[i];
    for(int i=1;i<=n;i++){
        for(int j=1;j<=i;j++){
            int pre=i-j;
            int k=i-j+1;
            int p=pre;
            int s1=0; int s2=0;
            dp[i][j]=dp[pre][1];
            int cnt=0;
            while(p && k<i){
                if(s1+a[p]<=s2+a[k]){
                    s1+=a[p--];
                } else{
                    s2+=a[k++];
                }
                if(s1==s2){
                    cnt++;
                    maxa(dp[i][j],cnt+dp[pre][pre-p+1]);
                }
            }
            deb(i,j,dp[i][j],cnt);
        }
        for(int j=i-1;j>=1;j--)
            maxa(dp[i][j],dp[i][j+1]);
    }
    cout<<dp[n][1]<<"\n";
}

• Subtask 1: 9 / 9
• Subtask 2: 11 / 11
• Subtask 3: 13 / 13
• Subtask 4: 15 / 15
• Subtask 5: 0 / 52