Submission #746006

#	Time	Username	Problem	Language	Result	Execution time	Memory
746006		vjudge1	Fancy Fence (CEOI20_fancyfence)	C++17	Compilation error	0 ms	0 KiB

fancyfence

#include <bits/stdc++.h>
using namespace std;

const long long MOD = 1e9+7;

int main(){
    long long n; cin >> n;
    long long x;
    long long ans = 0;
    vector<long long> w, h, comp;
    long long wsum = 0;
    for(long long i = 0; i < n; i++){
        cin >> x;
        h.push_back(x);
    }
    for(long long i = 0; i < n; i++){
        cin >> x;
        wsum += x;
        wsum = wsum % MOD;
        w.push_back(x);
    }

    for(long long i = 0; i < n; i++){
        if(h[i] == 2){
            if(i == 0) comp.push_back(w[i]);
            else if(h[i-1] == 2) comp.back() += w[i];
            else comp.push_back(w[i]);
        }
    }

    for(long long k : comp) {
        k = k % MOD;
        ans += k(k+1);
        ans = ans % MOD;
    }


    ans += wsum(wsum+1)/2;
    ans = ans % MOD;

    cout << ans;
}

Compilation message (stderr)

fancyfence.cpp: In function 'int main()':
fancyfence.cpp:33:21: error: 'k' cannot be used as a function
   33 |         ans += k(k+1);
      |                     ^
fancyfence.cpp:38:23: error: 'wsum' cannot be used as a function
   38 |     ans += wsum(wsum+1)/2;
      |                       ^