oj.uz

Submission #635346

# Submission time Handle Problem Language Result Execution time Memory
635346 2022-08-26T06:29:15 Z radal Remittance (JOI19_remittance) C++17
15 / 100
 270 ms 340 KB 
#include <bits/stdc++.h>
#pragma GCC target("sse,sse2")
#pragma GCC optimize("unroll-loops,O3")
#define rep(i,l,r) for (int i = l; i < r; i++)
#define repr(i,r,l) for (int i = r; i >= l; i--)
#define X first
#define Y second
#define all(x) (x).begin() , (x).end()
#define pb push_back
#define endl '\n'
#define debug(x) cerr << #x << " : " << x << endl;
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pll;
constexpr int N = 1e6+20,mod = 1e9+7,inf = 1e9+10;
inline int mkay(int a,int b){
    if (a+b >= mod) return a+b-mod;
    if (a+b < 0) return a+b+mod;
    return a+b;
}
 
inline int poww(int a,int k){
    if (k < 0) return 0;
    int z = 1;
    while (k){
        if (k&1) z = 1ll*z*a%mod;
        a = 1ll*a*a%mod;
        k /= 2;
    } 
    return z; 
}

int a[N],b[N],n,x[N],j,tmp[N];
ll s,s2;
int nxt(int i){
    return ((i == n-1) ? 0 : i+1);
}

bool check(int val){
    s2 = val;
    if (s2 > s) return 0;
    x[j] = val;
    int cur = j;
    do{
        int k = nxt(cur);
        if  (k == j) break;
        if ((a[cur]-b[cur]+x[cur])%2 || a[cur]-b[cur] < -x[cur]){
            return 0;
        }
        x[k] = (a[cur]-b[cur]+x[cur])/2;
        s2 += x[k];
        if (s2 > s) return 0;
        cur = k;
    }while (1);
    if (s != s2) return 0;
    return 1;
}

bool check2(){
    rep(i,0,n) tmp[i] = a[i];
    while (1){
        bool fl = 0;
        rep(i,0,n) fl |= x[i];
        if (!fl) return 1;
        rep(i,0,n){
            int k = nxt(i);
            if (!x[k] || tmp[i] <= 1) continue;
            fl = 0;
            if (tmp[i] >= 2*x[k]){
                tmp[i] -= 2*x[k];
                tmp[k] += 2*x[k];
                x[k] = 0;
            }
            else{
                int cnt = tmp[i]/2;
                tmp[i] -= 2*cnt;
                x[k] -= cnt;
                tmp[k] += cnt;
            }
        }
        if (fl) return 0;
    }
}
int main(){
    ios_base :: sync_with_stdio(0); cin.tie(0);
    cin >> n;
    int mx = -1;
    rep(i,0,n){
        cin >> a[i] >> b[i];
        s += a[i]-b[i];
        if (a[i]-b[i] > mx){
            j = i;
            mx = a[i]-b[i];
        }
    }
    if (s < 0){
        cout << "No";
        return 0;
    }
    rep(i,0,50000000) if (check(i) && check2()){
        cout << "Yes";
        return 0;
    }
    cout << "No";
    return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 280 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 106 ms 340 KB Output is correct
13 Correct 98 ms 340 KB Output is correct
14 Correct 115 ms 340 KB Output is correct
15 Correct 100 ms 340 KB Output is correct
16 Correct 96 ms 340 KB Output is correct
17 Correct 92 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 92 ms 340 KB Output is correct
20 Correct 92 ms 340 KB Output is correct
21 Correct 96 ms 340 KB Output is correct
22 Correct 103 ms 340 KB Output is correct
23 Correct 97 ms 340 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 90 ms 340 KB Output is correct
26 Correct 93 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 0 ms 340 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 97 ms 340 KB Output is correct
31 Correct 104 ms 340 KB Output is correct
32 Correct 0 ms 340 KB Output is correct

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 280 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 106 ms 340 KB Output is correct
13 Correct 98 ms 340 KB Output is correct
14 Correct 115 ms 340 KB Output is correct
15 Correct 100 ms 340 KB Output is correct
16 Correct 96 ms 340 KB Output is correct
17 Correct 92 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 92 ms 340 KB Output is correct
20 Correct 92 ms 340 KB Output is correct
21 Correct 96 ms 340 KB Output is correct
22 Correct 103 ms 340 KB Output is correct
23 Correct 97 ms 340 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 90 ms 340 KB Output is correct
26 Correct 93 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 0 ms 340 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 97 ms 340 KB Output is correct
31 Correct 104 ms 340 KB Output is correct
32 Correct 0 ms 340 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 0 ms 340 KB Output is correct
35 Correct 0 ms 340 KB Output is correct
36 Incorrect 270 ms 340 KB Output isn't correct
37 Halted 0 ms 0 KB -

Subtask #3
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 280 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 106 ms 340 KB Output is correct
13 Correct 98 ms 340 KB Output is correct
14 Correct 115 ms 340 KB Output is correct
15 Correct 100 ms 340 KB Output is correct
16 Correct 96 ms 340 KB Output is correct
17 Correct 92 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 92 ms 340 KB Output is correct
20 Correct 92 ms 340 KB Output is correct
21 Correct 96 ms 340 KB Output is correct
22 Correct 103 ms 340 KB Output is correct
23 Correct 97 ms 340 KB Output is correct
24 Correct 0 ms 340 KB Output is correct
25 Correct 90 ms 340 KB Output is correct
26 Correct 93 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 0 ms 340 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 97 ms 340 KB Output is correct
31 Correct 104 ms 340 KB Output is correct
32 Correct 0 ms 340 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 0 ms 340 KB Output is correct
35 Correct 0 ms 340 KB Output is correct
36 Incorrect 270 ms 340 KB Output isn't correct
37 Halted 0 ms 0 KB -