oj.uz

답안 #3910

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
3910 2013-08-31T09:20:52 Z imsifile Hexagon travel (kriii1_H) C++
1 / 1
 576 ms 1328 KB 
#include<stdio.h>
#include<memory.h>
#define md 1000000007

typedef long long ll;

int l, r, m, ty;
ll cmb[2][2222], dy[2][2222][6], t;
// loop type : 0=RGB, 1=RBG, 2=GBR, 3=GRB, 4=BRG, 5=BGR

int main(){
	int i, j, k, x;
	scanf("%d%d%d", &l, &r, &m);
	for(i=0; i<=l+r; i++){
		for(j=0; j<=r; j++){
			if(i<j)break;
			if(i==j || !j)cmb[1-ty][j]=1;
			else{
				cmb[1-ty][j]=cmb[ty][j]+cmb[ty][j-1];
				if(cmb[1-ty][j]>=md)cmb[1-ty][j]-=md;
			}
		}
		ty=1-ty;
	}
	t=cmb[ty][r], ty=0;
	dy[ty][m][4]=1;
	for(i=l+r+m; i>0; i--){
		memset(dy[1-ty],0,sizeof(dy[1-ty]));
		for(j=m; j>=0; j--){
			if(i<j)continue;
			for(k=0; k<6; k++){
				if(i-j>0){
					dy[1-ty][j][k^1]+=dy[ty][j][k];
					if(dy[1-ty][j][k^1]>=md)dy[1-ty][j][k^1]-=md;
				}
				if(j>0){
					if(k%2)x=(k+4)%6;
					else x=(k+2)%6;
					dy[1-ty][j-1][x]+=dy[ty][j][k];
					if(dy[1-ty][j-1][x]>=md)dy[1-ty][j-1][x]-=md;
				}
			}
		}
		ty=1-ty;
	}
	for(i=0; i<3; i++)printf("%lld\n", t*(dy[ty][0][2*i]+dy[ty][0][2*i+1])%md);
	return 0;
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 1328 KB Output is correct
2 Correct 0 ms 1328 KB Output is correct
3 Correct 0 ms 1328 KB Output is correct
4 Correct 0 ms 1328 KB Output is correct
5 Correct 0 ms 1328 KB Output is correct
6 Correct 20 ms 1328 KB Output is correct
7 Correct 0 ms 1328 KB Output is correct
8 Correct 104 ms 1328 KB Output is correct
9 Correct 32 ms 1328 KB Output is correct
10 Correct 576 ms 1328 KB Output is correct
11 Correct 368 ms 1328 KB Output is correct
12 Correct 184 ms 1328 KB Output is correct
13 Correct 72 ms 1328 KB Output is correct
14 Correct 232 ms 1328 KB Output is correct
15 Correct 208 ms 1328 KB Output is correct
16 Correct 76 ms 1328 KB Output is correct
17 Correct 156 ms 1328 KB Output is correct
18 Correct 184 ms 1328 KB Output is correct
19 Correct 144 ms 1328 KB Output is correct
20 Correct 160 ms 1328 KB Output is correct