oj.uz

Submission #378842

# Submission time Handle Problem Language Result Execution time Memory
378842 2021-03-17T05:58:54 Z wiwiho Gift (IZhO18_nicegift) C++14
7 / 100
 429 ms 61880 KB 
#include <bits/stdc++.h>

#define mp make_pair
#define F first
#define S second
#define eb emplace_back
#define printv(a, b) { \
    for(auto pv : a) b << pv << " "; \
    b << "\n"; \
}

using namespace std;

typedef long long ll;

using pll = pair<ll, ll>;
using pii = pair<int, int>;

const ll MAX = 1LL << 60;

ostream& operator<<(ostream& o, pll p){
    return o << '(' << p.F << ',' << p.S << ')';
}

ll iceil(ll a, ll b){
    return (a + b - 1) / b;
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    
    ll n, k;
    cin >> n >> k;

    vector<pll> a(n);
    for(int i = 0; i < n; i++){
        cin >> a[i].F;
        a[i].S = i + 1;
    }
    sort(a.begin(), a.end(), greater<>());

    vector<pair<ll, vector<int>>> ans;
    int lst = 0;
    for(int i = 1; i < n; i++){
        while(a[lst].F == 0) lst++;
        if(i == lst) continue;
        ll t = min(a[i].F, a[lst].F);
        a[lst].F -= t;
        a[i].F  -= t;
        ans.eb(mp(t, vector<int>()));
        ans.back().S.eb(a[lst].S);
        ans.back().S.eb(a[i].S);
    }

    for(int i = 0; i < n; i++){
        if(a[i].F != 0){
            cout << "-1\n";
            return 0;
        }
    }

    cout << ans.size() << "\n";
    for(auto& i : ans){
        cout << i.F << " ";
        printv(i.S, cout);
    }

    return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB n=4
2 Correct 1 ms 364 KB n=3
3 Correct 1 ms 364 KB n=3
4 Correct 1 ms 364 KB n=4
5 Correct 1 ms 364 KB n=4
6 Correct 1 ms 364 KB n=2

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB n=4
2 Correct 1 ms 364 KB n=3
3 Correct 1 ms 364 KB n=3
4 Correct 1 ms 364 KB n=4
5 Correct 1 ms 364 KB n=4
6 Correct 1 ms 364 KB n=2
7 Correct 1 ms 364 KB n=5
8 Correct 1 ms 364 KB n=8
9 Incorrect 1 ms 492 KB Jury has the answer but participant has not
10 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB n=4
2 Correct 1 ms 364 KB n=3
3 Correct 1 ms 364 KB n=3
4 Correct 1 ms 364 KB n=4
5 Correct 1 ms 364 KB n=4
6 Correct 1 ms 364 KB n=2
7 Correct 1 ms 364 KB n=5
8 Correct 1 ms 364 KB n=8
9 Incorrect 1 ms 492 KB Jury has the answer but participant has not
10 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 429 ms 61880 KB n=1000000
2 Incorrect 310 ms 41272 KB Expected int32, but "1500001500001" found
3 Halted 0 ms 0 KB -

Subtask #5
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB n=4
2 Correct 1 ms 364 KB n=3
3 Correct 1 ms 364 KB n=3
4 Correct 1 ms 364 KB n=4
5 Correct 1 ms 364 KB n=4
6 Correct 1 ms 364 KB n=2
7 Correct 1 ms 364 KB n=5
8 Correct 1 ms 364 KB n=8
9 Incorrect 1 ms 492 KB Jury has the answer but participant has not
10 Halted 0 ms 0 KB -