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Submission #641598

# Submission time Handle Problem Language Result Execution time Memory
641598 2022-09-17T07:19:31 Z christinelynn Zagrade (COI20_zagrade) C++17
100 / 100
 882 ms 1064 KB 
#include <bits/stdc++.h>
#define bupol __builtin_popcount
#define ll long long
#define fi first
#define se second
#define pb push_back
#define pu push
using namespace std;
const ll MAXN = 4e5+10;
const ll MAXS = 4010;
const ll INF = 1e9;
const ll MOD = 998244353;
const ll LOG = 60;
typedef pair<ll,ll> pii;
typedef pair<pii,ll> ipii;

vector <int> v;
char ans[MAXN];

int que(int x, int y){
    cout << "? " << x << ' ' << y << endl;
    int te; cin >> te; return te;
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int n, q; cin >> n >> q;
    for(int i=1; i<=n; i++){
        if(v.empty()){
            v.pb(i);
            continue;
        }
        v.pb(i);
        int siz = v.size()-1;
        int te = que(v[siz-1], v[siz]);
        if(te==1){
            ans[v[siz-1]] = '('; ans[v[siz]] = ')';
            v.pop_back(); v.pop_back();
        }
    }
    for(int i=0; i<v.size()/2; i++) ans[v[i]] = ')';
    for(int i=v.size()/2; i<v.size(); i++) ans[v[i]] = '(';
    cout << "! ";
    for(int i=1; i<=n; i++) cout << ans[i];
        cout << endl;
}

Compilation message

zagrade.cpp: In function 'int main()':
zagrade.cpp:41:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |     for(int i=0; i<v.size()/2; i++) ans[v[i]] = ')';
      |                  ~^~~~~~~~~~~
zagrade.cpp:42:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |     for(int i=v.size()/2; i<v.size(); i++) ans[v[i]] = '(';
      |                           ~^~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 5 ms 208 KB Output is correct
3 Correct 6 ms 208 KB Output is correct
4 Correct 6 ms 208 KB Output is correct
5 Correct 8 ms 208 KB Output is correct
6 Correct 9 ms 208 KB Output is correct
7 Correct 7 ms 208 KB Output is correct
8 Correct 8 ms 208 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 10 ms 320 KB Output is correct
3 Correct 8 ms 320 KB Output is correct
4 Correct 7 ms 208 KB Output is correct
5 Correct 8 ms 324 KB Output is correct
6 Correct 9 ms 208 KB Output is correct
7 Correct 10 ms 336 KB Output is correct
8 Correct 8 ms 208 KB Output is correct

Subtask #3
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 263 ms 404 KB Output is correct
3 Correct 865 ms 600 KB Output is correct
4 Correct 623 ms 512 KB Output is correct
5 Correct 830 ms 604 KB Output is correct
6 Correct 711 ms 500 KB Output is correct
7 Correct 882 ms 840 KB Output is correct
8 Correct 844 ms 520 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 696 ms 1064 KB Output is correct
3 Correct 807 ms 868 KB Output is correct
4 Correct 711 ms 736 KB Output is correct
5 Correct 499 ms 712 KB Output is correct
6 Correct 849 ms 912 KB Output is correct
7 Correct 870 ms 736 KB Output is correct
8 Correct 863 ms 404 KB Output is correct