Submission #251467

#	Time	Username	Problem	Language	Result	Execution time	Memory
251467		2qbingxuan	Lollipop (POI11_liz)	C++14	Compilation error	0 ms	0 KiB

liz

#include <iostream>
#include <algorithm>
using namespace std;
const int N = 1000025;
int n, q, v[N], sum[N];
int Z[N], lb[N*2];
signed main() {
    ios_base::sync_with_stdio(0), cin.tie(0);
    string s;
    cin >> n >> q >> s;
    for(int i = 0; i < n; i++) v[i] = (s[i]=='T' ? 2 : 1);
    for(int i = 0; i < n; i++) sum[i+1] = sum[i] + v[i];
    for(int i = 1, j = 0; i <= n*2; i++) {
        while(j < n && sum[j] < i) ++j;
        lb[i] = j;
    }
    for(int i = 1, j = 0, r = 0; i < n; i++) {
        Z[i] = max(0, min(r-i, Z[i-j]));
        while(i+Z[i] < n && v[Z[i]] == v[i+Z[i]]) ++Z[i];
        if(i+Z[i] > r) j = i, r = i+Z[i];
    }
    Z[0] = n;
    while(q--) {
        int k;
        cin >> k;
        int x = 0;
        for(int s = 1<<20; s; s>>=1) if(x+s < n && sum[x+s] < k) x += s;
        ++x;
        int x = lb[k];
        if(sum[x] == k) cout << 1 << ' ' << x << '\n';
        else {
            // sum[x] == k+1
            int L = Z[x]; // v[0:Z[x]-1] = v[x:x+Z[x]-1]
            // v[Z[x]] != v[x+Z[x]]
            int R = x+Z[x];
            /* debug(L, R); */
            if(v[L] == 1)
                --R;
            ++L;
            if(R >= n || sum[R+1] - sum[L] != k) cout << "NIE\n";
            else cout << L+1 << ' ' << R+1 << '\n';
        }
    }
}

Compilation message (stderr)

liz.cpp: In function 'int main()':
liz.cpp:29:13: error: redeclaration of 'int x'
         int x = lb[k];
             ^
liz.cpp:26:13: note: 'int x' previously declared here
         int x = 0;
             ^