Submission #1135545

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Source Code Expand

#include<bits/stdc++.h>
#define range(i,a,b) for(int i = (a); i < (b); i++)
#define rep(i,b) for(int i = 0; i < (b); i++)
#define all(a) (a).begin(), (a).end()
#define show(x)  cerr << #x << " = " << (x) << endl;
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << endl;
const int INF = 2000000000;
using namespace std;

int main(){
    string s;
    cin >> s;

    long long cnt = 0;
    long long ans = 0;
    for(int i = 0; i < s.size() - 1; i+=2){
        if(s.substr(i,2) == "25") cnt++;
        else {
            ans += (cnt * cnt + cnt) / 2;
            cnt = 0;
        }
    }
    if(cnt != 0) ans += (cnt * cnt + cnt) / 2;
    cnt = 0;
    for(int i = 1; i < s.size() - 1; i+=2){
        if(s.substr(i,2) == "25") cnt++;
        else {
            ans += (cnt * cnt + cnt) / 2;
            cnt = 0;
        }
    }
    if(cnt != 0) ans += (cnt * cnt + cnt) / 2;
    cout << ans << endl;
}

Submission Info

Judge Result