Submission #8152

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
8152	2014-09-01 09:20:03	paulsohn	Hexagon travel (kriii1_H)	C++98	0 / 1	0 ms	32768 KiB

H

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#include <stdio.h>
enum{red_green, red_blue, green_blue, green_red, blue_red, blue_green};
int L, R, M, movement[4001][2001][6] = { 0 }; //movement[L+R][M][color_forward]
int fact(int x){
  if (x == 0) return 1;
  return x*fact(x - 1);
}
int main(){
  int comb;
  scanf("%d %d %d", &L, &R, &M);
  movement[0][0][4] = 1;
  for (int m = 0; m <= M; ++m){
    for (int t = 0; t <= L + R; ++t){
      for (int i = 0; i < 3; ++i){
        if (movement[t][m][2 * i] >= 1000000007)
          movement[t][m][2*i] %= 1000000007;
        if (movement[t][m][2 * i+1] >= 1000000007)
          movement[t][m][2*i+1] %= 1000000007;
        if (t < L + R){
          movement[t + 1][m][2 * i] += movement[t][m][2 * i + 1];
          movement[t + 1][m][2 * i + 1] += movement[t][m][2 * i];
        }
        if (m < M){
          movement[t][m + 1][2 * i] += movement[t][m][(2 * i + 4) % 6];
          movement[t][m + 1][2 * i + 1] += movement[t][m][(2 * i + 3) % 6];
        }
      }
 
 
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• Subtask 1: 0 / 1