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Submission #860935

# Submission time Handle Problem Language Result Execution time Memory
860935 2023-10-14T20:08:42 Z GordonRemzi007 Martian DNA (BOI18_dna) C++17
0 / 100
 460 ms 1048576 KB 
#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;
        }
    }
    for(int i = 0; i < n; i++) {
        le = i, ri = n, ans = INT_MAX;
        while(le<ri) {
            mid = (le+ri)/2;
            ok = true;
            for(int j = 0; j < r; j++) {
                if(prefix[mid][j]-(i == 0 ? 0 : prefix[i-1][j]) < b[j].second) {
                    ok = false;
                    break;
                }
            }
            if(ok) {
                ri = mid-1;
                ans = mid;
            }
            else le = mid+1;
        }
        res = min(res, ans-i+1);
    }
    cout << res << "\n";
}

Compilation message

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 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 24.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 600 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Incorrect 47 ms 15684 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Runtime error 460 ms 1048576 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -