Submission #251690

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
251690	2020-07-22T07:37:33 Z	VEGAnn	Baloni (COCI15_baloni)	C++14	Compilation error	0 ms	0 KB

baloni

#include <bits/stdc++.h>
//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("fast-math")
//#pragma GCC optimize("no-stack-protector")
#define sz(x) ((int)x.size())
#define i2 array<int,2>
using namespace std;
typedef long long ll;
const int N = 1000100;
const int C = 22;
const int md = 10007;
set<i2> ps;
set<i2>::iterator iter;
int n, a[N], ans, nm[N];
bool mrk[N];

int mult(int x, int y) { return (x * y) % md; }

void SUM(int &x, int y){
    x += y;
    if (x >= md)
        x -= md;
}

bool cmp(int _x, int _y){
    if (a[_x] == a[_y])
        return _x < _y;
    else return a[_x] > a[_y];
}

int main() {
#ifdef _LOCAL
    freopen("in.txt","r",stdin); // freopen("output.txt","w",stdout);
#else
//    freopen("mining.in","r",stdin); freopen("mining.out","w",stdout);
    ios_base::sync_with_stdio(0); cin.tie(0);
#endif

    cin >> n;

    for (int i = 1; i <= n; i++) {
        cin >> a[i];
        nm[i] = i;
    }

    sort(nm + 1, nm + n + 1, cmp);

    for (int i = n; i > 0; i--)
        ps.insert({a[i], i});

    int ptr = 1;

    while (1){
        while (ptr <= n && mrk[nm[ptr]])
            ptr++;

        if (ptr > n) break;

        ans++;

        int pst = nm[ptr], vl = a[nm[ptr]];

        mrk[pst] = 1;

        while (pst != 0){
            if (sz(ps) == 0) break;

            iter = ps.upper_bound({vl - 1, pst});

            if (iter == ps[vl - 1].end()) break;

            if ((*iter)[] != vl - 1) break;

            pserase(iter);

            pst = (*iter)[1];
            vl--;
            mrk[pst] = 1;
        }
    }

    cout << ans;

    return 0;
}

Compilation message

baloni.cpp: In function 'int main()':
baloni.cpp:72:27: error: no match for 'operator[]' (operand types are 'std::set<std::array<int, 2> >' and 'int')
             if (iter == ps[vl - 1].end()) break;
                           ^
baloni.cpp:74:25: error: expected primary-expression before ']' token
             if ((*iter)[] != vl - 1) break;
                         ^
baloni.cpp:76:13: error: 'pserase' was not declared in this scope
             pserase(iter);
             ^~~~~~~