Submission #167431

#	Time	Username	Problem	Language	Result	Execution time	Memory
167431		PedroBigMan	Nizin (COCI16_nizin)	C++14	100 / 100	107 ms	10376 KiB

nizin

#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>
#include <string>
using namespace std;
typedef long long int ll;
typedef unsigned long long int ull;
typedef long double ld;
#define REP(i,a,b) for(ll i=a; i<b; i++)
#define pb push_back
#define mp make_pair
#define pl pair<ll,ll>
#define ff first
#define ss second
#define INF ((ll) pow(2,63) -1)
#define si signed
ll insig;
#define In(vecBRO, LENBRO) REP(IBRO,0,LENBRO) {cin>>insig; vecBRO.pb(insig);}
void Out(vector<ll> x) {REP(i,0,x.size()) {cout<<x[i]<<" ";} cout<<endl;}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    ll N; cin>>N;
    vector<ll> a; In(a,N);
    ll sum=0; REP(i,0,N) {sum+=a[i];}
    ll l=0; ll r=N;
    ll sl=a[0]; ll sr=0;
    ll ans=0;
    ll cov=0;
    ll curs=1;
    while(l<r)
    {
        if(sl<sr)
        {
            l++; sl+=a[l];
            curs++;
        }
        else if(sl>sr)
        {
            r--; sr+=a[r]; 
            curs++;
        }
        else
        {
            ans+=(curs-2);
            cov+=curs;
            l++; sl=a[l]; sr=0; 
            curs=1;
        }
    }
    cout<<ans+max(0LL,(N-cov-1))<<endl;
    return 0;
}

Compilation message (stderr)

nizin.cpp: In function 'void Out(std::vector<long long int>)':
nizin.cpp:10:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define REP(i,a,b) for(ll i=a; i<b; i++)
nizin.cpp:20:29:
 void Out(vector<ll> x) {REP(i,0,x.size()) {cout<<x[i]<<" ";} cout<<endl;}
                             ~~~~~~~~~~~~
nizin.cpp:20:25: note: in expansion of macro 'REP'
 void Out(vector<ll> x) {REP(i,0,x.size()) {cout<<x[i]<<" ";} cout<<endl;}
                         ^~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10