50227. Quaternary Quartic Equation

for(d = 0; ...)
    for(c = d + 1; ...)
        for(b = c + 1; ...)
            for(a = b + 1; ...)
```    
是會TLE的。

要把他換成
```c=
for(d = 0; ...)
    for(c = d + 1; ...)
        for(b = c + 1; ...)
            int a = sum[0] - b - c - d;
            if(a <= b) break;

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
 
int check(int a, int b, int c, int d, int sum[4]){
    return (((a*a) + (b*b) + (c*c) + (d*d) == sum[1]) &&
            ((a*a*a) + (b*b*b) + (c*c*c) + (d*d*d) == sum[2]) &&
            ((a*a*a*a) + (b*b*b*b) + (c*c*c*c) + (d*d*d*d) == sum[3]));
}
 
 
int main(){
    int sum[4];
    scanf("%d %d %d %d", &sum[0], &sum[1], &sum[2], &sum[3]);
 
    for(int d = 1; d < sum[0]; d++){
        for(int c = d + 1; c < sum[0]; c++){
            for(int b = c + 1; b < sum[0]; b++){
                if(sum[0] - b - c - d <= b) break;
                int a = sum[0] - b - c - d;
 
                if(check(a, b, c, d, sum)){
                    printf("%d\n%d\n%d\n%d\n", a, b, c, d);
                    return 0;
                }
            }
        }
    }
    printf("-1\n");
    return 0;
}