米哈游8.17笔试第三题
分享一个思路
int main() {
int l = 0, r = 5, x = 1;
vector<int> input = {0,1,2,1,3,1000};
int lastindex = l - 1;
int ans = 0;
for(int i = l; i <= r; ++i) {
if(input[i] == x) {
ans += (i - lastindex) * (r - i + 1);
lastindex = i;
}
}
cout << ans << endl;
return 0;
}
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