Compilare: user.cpp: In function ‘int main()’: user.cpp:61:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < v[st[i]].v.size(); j++) ^ user.cpp:72:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < v[st[i]].t.size(); j++) ^ user.cpp:89:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < v[pok].t.size(); j++) ^ user.cpp:100:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < v[pok].t.size(); j++) ^ user.cpp:23:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pang.in", "r", stdin); ^ user.cpp:24:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pang.out", "w", stdout); ^ user.cpp:26:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^ user.cpp:29:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &n, &m, &k); ^ user.cpp:41:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &a, &b); ^ user.cpp:48:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a); ^