Submission #188393

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Source Code Expand

#include<stdio.h>
#include<string.h>
#include<math.h>
#include<ctype.h>

int ok=0; // 陦後¢縺滓焚

int check(int x, int y, int n, int d, int tx, int ty)
{
        if(x == tx && y == tx){
                ok++;
        }
        if(n==0){
                return;
        }
        check(x + d, y,     n-1,d,tx,ty);
        check(x - d, y,     n-1,d,tx,ty);
        check(x    , y + d, n-1,d,tx,ty);
        check(x    , y - d, n-1,d,tx,ty);
}

int main(void)
{
        int n = 11;
        int d = 8562174;
        int x = 25686522;
        int y = 17124348;
        //
        //int n = 2;
        //int d = 100;
        //int x = 100;
        //int y = 100;
        //
        //int n = 5;
        //int d = 1;
        //int x = 4;
        //int y = 1;
        scanf("%d%d", &n, &d);
        scanf("%d%d", &x, &y);
        check(0,0,n,d,x,y);
        double all = pow(4,n);
        //printf("%d¥n", ok);
        //printf("%lf¥n", all);
        printf("%f¥n", ok/all);
        return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int check(int, int, int, int, int, int)’:
./Main.cpp:14:17: error: return-statement with no value, in function returning ‘int’ [-fpermissive]
./Main.cpp: In function ‘int main()’:
./Main.cpp:38:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
./Main.cpp:39:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]