Submission #555544

#	Time	Username	Problem	Language	Result	Execution time	Memory
555544		fuad27	Aliens (IOI16_aliens)	C++17	Compilation error	0 ms	0 KiB

aliens

#include<bits/stdc++.h>
using namespace std;
const int MAXN = 5010;
const int MAXK = 50;
long long k;
vector<long long> pref[50];
bool check(int l, int r) {
	bool c = true;
	for(int i = 0;i<k;i++) {
		if(!(pref[i][r+1] - pref[i][l]))c = false;
	}	
	return c;
}
int main () {
	long long n, m;
	cin >> n >> k >> m;
	for(int i = 0;i<50;i++) {
		pref[i].resize(MAXN);
	}
	long long arr[n];
	for(int i = 0;i<n;i++){
		cin >> arr[i];
		arr[i]--;
	}
	for(int i = 0;i<50;i++) {
		pref[i][0] = 0;
		for(int j = 1;j<=n;j++) {
			if(arr[j-1] == i) {
				pref[i][j] = pref[i][j-1]+1;
			}
			else pref[i][j] = pref[i][j-1];
		}
	}
	while(m--) {
		int type;
		cin >> type;
		if(type == 1) {
			int p, v;
			cin >> p >> v;
			v--;p--;
			arr[p] = v;
			for(int i = 0;i<50;i++) {
				pref[i][0] = 0;
				for(int j = 1;j<=n;j++) {
					if(arr[j-1] == i) {
						pref[i][j] = pref[i][j-1]+1;
					}
					else pref[i][j] = pref[i][j-1];
				}
			}
		}
		else {
	 			int p1 = 0, p2 = 0;
    			long long ans = 1e9;
    			while(p2 < n) {
    				if(check(p1, p2)) {
    					ans = min(ans, (long long)p2-p1+1);
    					p1++;
    				}
    				else {
    					p2++;
    				}
    			}
    			if(ans == 1e9)ans = -1;
    			cout << ans << "\n";
		}
	}
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccgN6ZvI.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccg4U31H.o:aliens.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccgN6ZvI.o: in function `main':
grader.cpp:(.text.startup+0xf0): undefined reference to `take_photos(int, int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status