Submission #197377

#TimeUsernameProblemLanguageResultExecution timeMemory
197377NeklixxUsmjeri (COCI17_usmjeri)C++14
28 / 140
193 ms9416 KiB
#include <bits/stdc++.h> #define pb push_back #define mp make_pair #define F first #define S second #define all(v) v.begin(), v.end() #define sh cin.tie(0); cin.sync_with_stdio(0); cout.tie(0); #define FILE freopen("test.in", "r", stdin); #define vprint(v) for (int ii = 0; ii < v.size(); ii++){cout << v[ii] << " ";} #define debugv(v) if (v.size() != 0) {cout << "[ "; for (int __ = 0; __ < (int)(v.size()) - 1; __++){cout << v[__] << ", ";} cout << v[(int)(v.size()) - 1] << " ]" << endl;} else {cout << "[]" << endl;} #define debug cout << "-----------------------------------------------" << endl; #define print1(a) cout << "{ " << a << " }" << endl; #define print2(a, b) cout << "{ " << a << ", " << b << " }" << endl; #define print3(a, b, c) cout << "{ " << a << ", " << b << ", " << c << " }" << endl; #define print4(a, b, c, d) cout << "{ " << a << ", " << b << ", " << c << ", " << d << " }" << endl; using namespace std; //#define int long long const int INF = 1e9 + 228; const int MAXN = 1e5 + 228; const int mod = 1e9 + 7; signed main() { #ifdef LOCAL FILE; #endif sh; int n, m; cin >> n >> m; for (int i = 0; i < n - 1; i++) { int aa, bb; cin >> aa >> bb; } vector<pair<int, int>> v; for (int i = 0; i < m; i++) { int aa, bb; cin >> aa >> bb; aa--; bb--; if (aa > bb) swap(aa, bb); v.pb({aa, 1}); v.pb({bb, -1}); } sort(all(v)); int lst = 0; int bal = 0; int ans = 1; for (int i = 0; i < v.size();) { int now = v[i].F; if (bal == 0) { for (int j = 0; j < now - lst; j++) { ans *= 2; ans %= mod; } } while (i < v.size() && v[i].F == now) { bal += v[i].S; i++; } if (bal == 0) { lst = now; ans *= 2; ans %= mod; } } if (bal == 0) { for (int j = 0; j < n - 1 - lst; j++) { ans *= 2; ans %= mod; } } cout << ans << endl; return 0; }

Compilation message (stderr)

usmjeri.cpp: In function 'int main()':
usmjeri.cpp:48:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < v.size();) {
                  ~~^~~~~~~~~~
usmjeri.cpp:56:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while (i < v.size() && v[i].F == now) {
          ~~^~~~~~~~~~
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...