Submission #1021848

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1021848	2024-07-13T06:08:30 Z	guagua0407	Tug of War (BOI15_tug)	C++17	18 / 100	26 ms	860 KB

tug

//#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define f first
#define s second
#define all(x) x.begin(),x.end()
#define _ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

int dx[4]={0,0,1,-1};
int dy[4]={1,-1,0,0};

void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

int main() {_
    int n,k;
    cin>>n>>k;
    vector<int> l(2*n),r(2*n),S(2*n);
    int all=0;
    for(int i=0;i<2*n;i++){
        cin>>l[i]>>r[i]>>S[i];
        l[i]--;
        r[i]--;
        all+=S[i];
    }
    for(int i=0;i<(1<<(2*n));i++){
        if(__builtin_popcount(i)!=n) continue;
        vector<int> L(n),R(n);
        bool tf=true;
        int sum=0;
        for(int j=0;j<2*n;j++){
            if(i&(1<<j)){
                if(L[l[j]]) tf=false;
                L[l[j]]=1;
                sum+=S[j];
            }
            else{
                if(R[r[j]]) tf=false;
                R[r[j]]=1;
            }
        }
        if(!tf) continue;
        if(abs(sum-(all-sum))<=k){
            cout<<"YES"<<'\n';
            return 0;
        }
    }
    cout<<"NO"<<'\n';
    return 0;
}
//maybe its multiset not set
//yeeorz
//laborz

Compilation message

tug.cpp: In function 'void setIO(std::string)':
tug.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tug.cpp:16:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1

18.0 / 18.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	21 ms	348 KB	Output is correct
2	Correct	1 ms	344 KB	Output is correct
3	Correct	21 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	21 ms	344 KB	Output is correct
6	Correct	26 ms	452 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	6 ms	452 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	21 ms	456 KB	Output is correct
11	Correct	1 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	2 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	344 KB	Output is correct
16	Correct	21 ms	344 KB	Output is correct
17	Correct	2 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	3 ms	348 KB	Output is correct
21	Correct	24 ms	348 KB	Output is correct
22	Correct	1 ms	344 KB	Output is correct
23	Correct	21 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	21 ms	456 KB	Output is correct

Subtask #2

0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	21 ms	348 KB	Output is correct
2	Correct	1 ms	344 KB	Output is correct
3	Correct	21 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	21 ms	344 KB	Output is correct
6	Correct	26 ms	452 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	6 ms	452 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	21 ms	456 KB	Output is correct
11	Correct	1 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	2 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	344 KB	Output is correct
16	Correct	21 ms	344 KB	Output is correct
17	Correct	2 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	3 ms	348 KB	Output is correct
21	Correct	24 ms	348 KB	Output is correct
22	Correct	1 ms	344 KB	Output is correct
23	Correct	21 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	21 ms	456 KB	Output is correct
26	Incorrect	1 ms	348 KB	Output isn't correct
27	Halted	0 ms	0 KB	-

Subtask #3

0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	5 ms	860 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #4

0 / 29.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	21 ms	348 KB	Output is correct
2	Correct	1 ms	344 KB	Output is correct
3	Correct	21 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	21 ms	344 KB	Output is correct
6	Correct	26 ms	452 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	6 ms	452 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	21 ms	456 KB	Output is correct
11	Correct	1 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	2 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	1 ms	344 KB	Output is correct
16	Correct	21 ms	344 KB	Output is correct
17	Correct	2 ms	348 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	3 ms	348 KB	Output is correct
21	Correct	24 ms	348 KB	Output is correct
22	Correct	1 ms	344 KB	Output is correct
23	Correct	21 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	21 ms	456 KB	Output is correct
26	Incorrect	1 ms	348 KB	Output isn't correct
27	Halted	0 ms	0 KB	-