PAT甲级——1065 A+B and C (64bit)

1065 A+B and C (64bit)

Given three integers A, B and C in [−2​63​​,2​63​​], you are supposed to tell whether A+B>C.

Input Specification:

The first line of the input gives the positive number of test cases, T (≤10). Then T test cases follow, each consists of a single line containing three integers A, B and C, separated by single spaces.

Output Specification:

For each test case, output in one line Case #X: true if A+B>C, or Case #X: false otherwise, where X is the case number (starting from 1).

Sample Input:

3
1 2 3
2 3 4
9223372036854775807 -9223372036854775808 0

Sample Output:

Case #1: false
Case #2: true
Case #3: false

#include <cstdio> 

int main(){
    int n,i;
    long long int a,b,c; 

    scanf("%d",&n);
    for(i=1;i<=n;++i){
        bool flg = true;
        scanf("%lld %lld %lld",&a,&b,&c);
        long long res = a+b;
        if(a>0 && b>0 && res<=0)flg = true;
        else if(a<0 && b<0 && res>=0)flg = false;
        else{
            if(res<=c)flg = false;
        }
        if(flg){
            printf("Case #%d: true\n",i);
        }else{
            printf("Case #%d: false\n",i);
        }
    }
    return 0;
}