三元一次方程

#include <stdio.h>

int main() {

int count = 0;

for (int x = -30; x <= 30; x++) {

for (int y = -30; y <= 30; y++) {

for (int z = -30; z <= 30; z++) {

if (2 * x + 3 * y + 5 * z == 100) {

count++;

}

}

}

}

printf("%d\n", count);

return 0;

}