답안 #402551

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
402551	2021-05-11T23:25:41 Z	AmineWeslati	송금 (JOI19_remittance)	C++14	15 / 100	1000 ms	296 KB

remittance

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef vector<int>vi;
#define pb push_back
#define sz(v) (int)v.size()
#define all(x) begin(x),end(x)

#define dbgv(v) for(auto x: v) cerr << x << ' '; cerr << endl;

#define FOR(i,a,b) for(int i=a; i<b; i++)
#define ROF(i,a,b) for(int i=b-1; i>=a; i--)

const int nx[4]={-1,0,1,0},ny[4]={0,1,0,-1};

void IO(){
#ifdef LOCAL
	freopen("input.txt","r",stdin);
	freopen("output.txt","w",stdout);
#endif
}

//-----------------------------------------------//

void no(){
	cout << "No" << endl;
	exit(0);
}

int main(){
	IO();

	int N; cin>>N;
	vector<ll> a(N+1),b(N+1),c(N+1),power(N+1,1);
	ll sum=0;
	FOR(i,1,N+1){
		cin>>a[i]>>b[i];
		c[i]=b[i]-a[i];	

		sum+=a[i];
		power[i]=power[i-1]*2;
	}

	ll x=0;
	FOR(i,1,N+1) x+=power[i-1]*c[i];
	if(x%(1-power[N])!=0) no();
	x/=(1-power[N]);
	if(x<0) no();

	vector<ll> X(N+1); X[N]=x; 
	ROF(i,1,N){
		X[i]=c[i+1]+2*X[i+1];
		if(X[i]<0) no();
	}
	assert(X[N]==c[1]+2*X[1]);

	//checking

	int rep=5e5;
	while(rep--){
		FOR(i,1,N+1){
			while(X[i] && 2<=a[i]){
				a[i]-=2; X[i]--;

				int nxt=i+1; 
				if(i==N) nxt=1;
				a[nxt]++;
			}
		}
	}
	FOR(i,1,N+1) if(X[i]) no();

	FOR(i,1,N+1) if(a[i]!=b[i]) no();

	cout << "Yes" << endl;

}

Subtask #1

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	2 ms	204 KB	Output is correct
3	Correct	2 ms	204 KB	Output is correct
4	Correct	3 ms	204 KB	Output is correct
5	Correct	4 ms	284 KB	Output is correct
6	Correct	5 ms	204 KB	Output is correct
7	Correct	5 ms	204 KB	Output is correct
8	Correct	2 ms	204 KB	Output is correct
9	Correct	4 ms	204 KB	Output is correct
10	Correct	5 ms	284 KB	Output is correct
11	Correct	5 ms	284 KB	Output is correct
12	Correct	1 ms	204 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	1 ms	204 KB	Output is correct
16	Correct	1 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	5 ms	204 KB	Output is correct
19	Correct	1 ms	204 KB	Output is correct
20	Correct	7 ms	204 KB	Output is correct
21	Correct	7 ms	204 KB	Output is correct
22	Correct	1 ms	204 KB	Output is correct
23	Correct	1 ms	204 KB	Output is correct
24	Correct	6 ms	204 KB	Output is correct
25	Correct	1 ms	204 KB	Output is correct
26	Correct	10 ms	204 KB	Output is correct
27	Correct	1 ms	204 KB	Output is correct
28	Correct	5 ms	204 KB	Output is correct
29	Correct	5 ms	204 KB	Output is correct
30	Correct	1 ms	204 KB	Output is correct
31	Correct	8 ms	204 KB	Output is correct
32	Correct	5 ms	204 KB	Output is correct

Subtask #2

0 / 40.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	2 ms	204 KB	Output is correct
3	Correct	2 ms	204 KB	Output is correct
4	Correct	3 ms	204 KB	Output is correct
5	Correct	4 ms	284 KB	Output is correct
6	Correct	5 ms	204 KB	Output is correct
7	Correct	5 ms	204 KB	Output is correct
8	Correct	2 ms	204 KB	Output is correct
9	Correct	4 ms	204 KB	Output is correct
10	Correct	5 ms	284 KB	Output is correct
11	Correct	5 ms	284 KB	Output is correct
12	Correct	1 ms	204 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	1 ms	204 KB	Output is correct
16	Correct	1 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	5 ms	204 KB	Output is correct
19	Correct	1 ms	204 KB	Output is correct
20	Correct	7 ms	204 KB	Output is correct
21	Correct	7 ms	204 KB	Output is correct
22	Correct	1 ms	204 KB	Output is correct
23	Correct	1 ms	204 KB	Output is correct
24	Correct	6 ms	204 KB	Output is correct
25	Correct	1 ms	204 KB	Output is correct
26	Correct	10 ms	204 KB	Output is correct
27	Correct	1 ms	204 KB	Output is correct
28	Correct	5 ms	204 KB	Output is correct
29	Correct	5 ms	204 KB	Output is correct
30	Correct	1 ms	204 KB	Output is correct
31	Correct	8 ms	204 KB	Output is correct
32	Correct	5 ms	204 KB	Output is correct
33	Correct	1 ms	204 KB	Output is correct
34	Correct	15 ms	296 KB	Output is correct
35	Correct	15 ms	204 KB	Output is correct
36	Execution timed out	1088 ms	204 KB	Time limit exceeded
37	Halted	0 ms	0 KB	-

Subtask #3

0 / 45.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	2 ms	204 KB	Output is correct
3	Correct	2 ms	204 KB	Output is correct
4	Correct	3 ms	204 KB	Output is correct
5	Correct	4 ms	284 KB	Output is correct
6	Correct	5 ms	204 KB	Output is correct
7	Correct	5 ms	204 KB	Output is correct
8	Correct	2 ms	204 KB	Output is correct
9	Correct	4 ms	204 KB	Output is correct
10	Correct	5 ms	284 KB	Output is correct
11	Correct	5 ms	284 KB	Output is correct
12	Correct	1 ms	204 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	1 ms	204 KB	Output is correct
16	Correct	1 ms	204 KB	Output is correct
17	Correct	1 ms	204 KB	Output is correct
18	Correct	5 ms	204 KB	Output is correct
19	Correct	1 ms	204 KB	Output is correct
20	Correct	7 ms	204 KB	Output is correct
21	Correct	7 ms	204 KB	Output is correct
22	Correct	1 ms	204 KB	Output is correct
23	Correct	1 ms	204 KB	Output is correct
24	Correct	6 ms	204 KB	Output is correct
25	Correct	1 ms	204 KB	Output is correct
26	Correct	10 ms	204 KB	Output is correct
27	Correct	1 ms	204 KB	Output is correct
28	Correct	5 ms	204 KB	Output is correct
29	Correct	5 ms	204 KB	Output is correct
30	Correct	1 ms	204 KB	Output is correct
31	Correct	8 ms	204 KB	Output is correct
32	Correct	5 ms	204 KB	Output is correct
33	Correct	1 ms	204 KB	Output is correct
34	Correct	15 ms	296 KB	Output is correct
35	Correct	15 ms	204 KB	Output is correct
36	Execution timed out	1088 ms	204 KB	Time limit exceeded
37	Halted	0 ms	0 KB	-