oj.uz

Submission #341189

# Submission time Handle Problem Language Result Execution time Memory
341189 2020-12-29T05:33:47 Z juggernaut Marriage questions (IZhO14_marriage) C++14
48 / 100
 1500 ms 4588 KB 
//Just try and the idea will come!
#include<bits/stdc++.h>
#define int long long int
using namespace std;
int n,m,k,x,y,cnt,mt[100001];
vector<vector<int>>g(100001);
bool used[100001];
bool kuhn(int v){
    if(used[v]||v<x||v>y)return false;
    used[v]=true;
    for(int to:g[v]){
        if(mt[to]==0||kuhn(mt[to])){
            mt[to]=v;
            return true;
        }
    }
    return false;
}
bool check(int l,int r){
    for(int i=1;i<=n;i++)mt[i]=0;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=n;j++)used[j]=false;
        kuhn(i);
    }
    int c=0;
    for(int i=1;i<=n;i++)if(mt[i])c++;
    return c==m;
}
main(){
    scanf("%lld%lld%lld",&n,&m,&k);
    while(k--){
        scanf("%lld%lld",&x,&y);
        g[x].push_back(y);
    }
    for(x=1;x<=n;x++)
    for(y=x;y<=n;y++){
        if(check(x,y)){
            cnt+=n-y+1;
            break;
        }
    }
    printf("%lld",cnt);
}

Compilation message

marriage.cpp:29:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   29 | main(){
      |      ^
marriage.cpp: In function 'int main()':
marriage.cpp:30:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   30 |     scanf("%lld%lld%lld",&n,&m,&k);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
marriage.cpp:32:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   32 |         scanf("%lld%lld",&x,&y);
      |         ~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
48.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2668 KB Output is correct
2 Correct 2 ms 2668 KB Output is correct
3 Correct 2 ms 2668 KB Output is correct
4 Correct 2 ms 2668 KB Output is correct
5 Correct 2 ms 2668 KB Output is correct
6 Correct 2 ms 2668 KB Output is correct
7 Correct 2 ms 2668 KB Output is correct
8 Correct 2 ms 2668 KB Output is correct
9 Correct 2 ms 2668 KB Output is correct
10 Correct 2 ms 2668 KB Output is correct
11 Correct 2 ms 2668 KB Output is correct
12 Correct 2 ms 2668 KB Output is correct
13 Correct 2 ms 2668 KB Output is correct
14 Correct 2 ms 2688 KB Output is correct
15 Correct 2 ms 2668 KB Output is correct
16 Correct 2 ms 2668 KB Output is correct
17 Correct 2 ms 2668 KB Output is correct
18 Correct 2 ms 2668 KB Output is correct
19 Correct 36 ms 2668 KB Output is correct
20 Correct 31 ms 2668 KB Output is correct
21 Correct 41 ms 2668 KB Output is correct
22 Correct 43 ms 2668 KB Output is correct
23 Correct 46 ms 2796 KB Output is correct
24 Correct 43 ms 2668 KB Output is correct
25 Execution timed out 1582 ms 2796 KB Time limit exceeded
26 Execution timed out 1591 ms 2668 KB Time limit exceeded
27 Execution timed out 1583 ms 2668 KB Time limit exceeded
28 Execution timed out 1592 ms 2668 KB Time limit exceeded
29 Execution timed out 1597 ms 2796 KB Time limit exceeded
30 Execution timed out 1580 ms 2796 KB Time limit exceeded
31 Execution timed out 1592 ms 3308 KB Time limit exceeded
32 Execution timed out 1591 ms 2924 KB Time limit exceeded
33 Execution timed out 1583 ms 2668 KB Time limit exceeded
34 Execution timed out 1591 ms 2796 KB Time limit exceeded
35 Execution timed out 1592 ms 3820 KB Time limit exceeded
36 Execution timed out 1595 ms 3692 KB Time limit exceeded
37 Execution timed out 1590 ms 3436 KB Time limit exceeded
38 Execution timed out 1593 ms 4204 KB Time limit exceeded
39 Execution timed out 1551 ms 2796 KB Time limit exceeded
40 Execution timed out 1593 ms 2924 KB Time limit exceeded
41 Execution timed out 1589 ms 3052 KB Time limit exceeded
42 Execution timed out 1592 ms 3308 KB Time limit exceeded
43 Execution timed out 1585 ms 3436 KB Time limit exceeded
44 Execution timed out 1586 ms 3820 KB Time limit exceeded
45 Execution timed out 1594 ms 3564 KB Time limit exceeded
46 Execution timed out 1540 ms 4588 KB Time limit exceeded
47 Execution timed out 1586 ms 4204 KB Time limit exceeded
48 Execution timed out 1600 ms 4204 KB Time limit exceeded
49 Execution timed out 1594 ms 4588 KB Time limit exceeded
50 Execution timed out 1586 ms 3052 KB Time limit exceeded