hnu 12436 Force of thrust#水题

/**
解方程组，3个方程4个未知量，有spj的
关键是可以确定一个每个未知数范围，水题水过
*/
#include <stdio.h>

int main()
{
    const int LL = -100000000,RR = 100000000;

    int L,R,H,M,T,V,N;
    int fL,fR,fU,fD;
    scanf("%d%d%d",&T,&H,&V);
    M = (T + H + V) / 2;
    N = (T - H - V) / 2;
    L = LL;
    R = RR;

    if(LL + H > L)
        L = LL + H;
    if(RR + H < R)
        R = RR + H;

    if(N + H - RR > L)
        L = N + H - RR;
    if(N + H - LL < R)
        R = N + H - LL;

    if(M - RR > L)
        L = M - RR;
    if(M - LL < R)
        R = M - LL;
    fR = R;
    fL = fR - H;
    fD = N + H - fR;
    fU = M - fR;
    printf("%d %d %d %d\n",fL,fR,fU,fD);

  //  printf("\n%d %d %d\n",fL + fR + fU + fD,fR - fL,fU - fD);
    return 0;
}