Submission #1229734

#	Time	Username	Problem	Language	Result	Execution time	Memory
1229734		papaulo	Global Warming (NOI13_gw)	C++20	Compilation error	0 ms	0 KiB

gw

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

int gw(int N, int *H) {
    map<int, vector<int>> mp;
    vector<int> ativo(N+2, 0);
    for(int i=0;i<N;i++) {
        auto p = mp.find(H[i]);
        if(p==mp.end()) mp.insert({H[i], vector<int>(1, i+1)});
        else p->second.push_back(i+1);
    }
    int cur=0, ans=0;
    for(auto p = mp.rbegin(); p!=mp.rend(); p++) {
        auto &v = p->second;
        for(auto i : v) {
            if(!ativo[i-1]&&!ativo[i+1]) cur++;
            else if(ativo[i-1]&&ativo[i+1]) cur--;
            ans=max(ans, cur);
            ativo[i]=1;
        }
    }
    return ans;
}

Compilation message (stderr)

/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/11/../../../x86_64-linux-gnu/crt1.o: in function `_start':
(.text+0x1b): undefined reference to `main'
collect2: error: ld returned 1 exit status