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提示一个可能的bug注意,在选好pos,置各种组合为false的时候,一定使用i+pos <= 20,否则会出界。虽然在自己电脑上能把官方的测试数据都过去,但是oj显示WA,而不是Runtime Error.
bool tmp[25];
memcpy(tmp, s, 25);
tmp[pos] = false;
for(int i = 2; i+pos <= 20; i++){
if(!tmp[i]){
tmp[pos+i] = false; //不可选
}
}
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