Submission #860935

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
860935	2023-10-14 20:08:42	GordonRemzi007	Martian DNA (BOI18_dna)	C++17	0 / 100	460 ms	1048576 KiB

dna

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#include <iostream>
#include <vector>
#include <map>
#include <climits>
using namespace std;
int main() {
    int n, k, r, res, le, ri, mid, ans;
    bool ok;
    map<int,int> c;
    cin >> n >> k >> r;
    vector<int> a(n);
    vector<pair<int,int>> b(r);
    vector<vector<int>> prefix(n, vector<int>(r));
    for(int i = 0; i < n; i++) cin >> a[i];
    for(int i = 0; i < r; i++) {
        cin >> b[i].first >> b[i].second;
        c[b[i].first] = i+1;
    }
    if(c[a[0]]) prefix[0][c[a[0]]-1]++;
    for(int i = 1; i < n; i++) {
        for(int j = 0; j < r; j++) prefix[i][j] = prefix[i-1][j];
        if(c[a[i]]) prefix[i][c[a[i]]-1]++;
    }
    for(int z = 0; z < r; z++) {
        if(prefix[n-1][z] < b[z].second) {
            cout << "impossible\n";
            return 0;
        }
 
 
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Compilation message (stderr)

dna.cpp: In function 'int main()':
dna.cpp:51:20: warning: 'res' may be used uninitialized in this function [-Wmaybe-uninitialized]
   51 |     cout << res << "\n";
      |                    ^~~~

• Subtask 1: 0 / 16
• Subtask 2: 0 / 24
• Subtask 3: 0 / 28
• Subtask 4: 0 / 32