Compilare: main.cpp: In function 'void afisare()': main.cpp:63:36: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=] printf("%d ", sol[i].size()); ^ main.cpp:64:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<sol[i].size();j++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void citire()': main.cpp:21:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &n, &m); ^ main.cpp:24:43: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &g[i].x, &g[i].y); ^ main.cpp: In function 'int main()': main.cpp:72:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("johnie.in", "r", stdin); ^ main.cpp:73:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("johnie.out", "w", stdout); ^